MESON Chess Problem Database
Problem Display
PID: 39560 (nrrb1N2/1Bk2p2/R1P2p2/4pp2/b4n2/QRN1B3/1P5K/8 w - - 0 1)
Penrose, Lionel Sharples
British Chess Magazine, 1947
#2
10 + 11
| 56 | The Problemist | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bb5
- 2.Sxb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...e4
- 2.Bxf4#
- 1...Rxb7
- Tries
- 1.Se4?
- threat
- 2.Qd6#
- 1...Be7
- 2.Qxe7#
- 1...fxe4!
- threat
- 1.Se6+?
- 1...Sxe6
- 2.Sd5#
- 1...fxe6!
- 1...Sxe6
- 1.Sh7?
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Be7
- 2.Qxe7#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...e4
- 2.Bxf4#
- 1...Bxc6!
- 1...Rxb7
- 1.Bc1?
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...e4
- 2.Bxf4#
- 1...Sb6!
- 1...Rxb7
- 1.Bg1?
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...e4!
- 1...Rxb7
- 1.Bd2?
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...e4
- 2.Bxf4#
- 1...Sb6!
- 1...Rxb7
- 1.Bf2?
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...e4!
- 1...Rxb7
- 1.Bxf4?
- threat
- 2.Sd5#
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Sb6!
- threat
- 1.Ba7?
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...e4!
- 1...Rxb7
- 1.Rbb6?
- 1...Rxb7
- 2.Rxb7#
- 1...Sxb6
- 2.Bxb6#
- 1...Be7
- 2.Qxe7#
- 1...e4
- 2.Bxf4#
- 1...Bd1
- 2.Sb5#
- 1...Bc2
- 2.Sb5#
- 1...Bb3
- 2.Sb5#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Bxc6!
- 1...Rxb7
- 1.Rxa4?
- threat
- 2.Sb5#
- 1...Be7
- 2.Qxe7#
- 1...Rxb7!
- threat
- 1.Rab6?
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Sxb6
- 2.Bxb6#
- 1...Be7
- 2.Qxe7#
- 1...e4
- 2.Bxf4#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Rxb7!
- 1...Bxb3
- 1.Qb4?
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 1...Be7
- 2.Qxe7#
- 1...e4
- 2.Bxf4#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...Rxb7!
- 1...Bxb3
- 1.Qc5?
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Bxc6
- 2.Rxc6#
- 2.Qxc6#
- 1...Be7
- 2.Qxe7#
- 1...e4
- 2.Bxf4#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6!
- 1...Rxb7
- 1.Se4?
- Keys
- 1.Kh1!
- 1...Bxc6+
- 2.Rxc6#
- 1...Rxb7
- 2.Rxb7#
- 1...Bxb3
- 2.Sb5#
- 1...Be7
- 2.Qxe7#
- 1...Bb5
- 2.Sxb5#
- 1...Se2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...Sh3
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sg6
- 2.Sd5#
- 1...Sb6
- 2.Bxb6#
- 1...e4
- 2.Bxf4#
- 1...Bxc6+
- 1.Kh1!
This is a version of 740
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(h);N_GUARD::B(F),XS(h)
- P(c);OGATEB::B(F),XS(b)
- Tries
- Try
- S(E);
- Threat
- QAB1(C)
- Vars
- B(k);N_GUARD::QAR2(C),XB(k)
- Refutation
- P(d);XS(E)
- Try
- S(J);CHECK
- Vars
- S(b);XS(J)::S(E)
- Refutation
- P(g);XS(J)
- Try
- S(J);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(k);N_GUARD::QAR2(C),XB(k)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(h);N_GUARD::B(F),XS(h)
- P(c);OGATEB::B(F),XS(b)
- Refutation
- B(a);XP(H)
- Try
- B(F);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- P(c);OGATEB::B(F),XS(b)
- Refutation
- S(h);
- Try
- B(F);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(h);N_GUARD::B(F),XS(h)
- Refutation
- P(c);
- Try
- B(F);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- P(c);OGATEB::B(F),XS(b)
- Refutation
- S(h);
- Try
- B(F);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(h);N_GUARD::B(F),XS(h)
- Refutation
- P(c);
- Try
- B(F);P_PINP(c),XS(b)
- Threat
- S(E)
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- Refutation
- S(h);
- Try
- B(F);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(h);N_GUARD::B(F),XS(h)
- Refutation
- P(c);
- Try
- R(D);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- S(h);OGATE,XR(D)::B(F),XS(h)
- B(k);N_GUARD::QAR2(C),XB(k)
- P(c);OGATEB::B(F),XS(b)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- Refutation
- B(a);XP(H)
- Try
- R(G);XB(a)
- Threat
- S(E)
- Vars
- B(k);N_GUARD::QAR2(C),XB(k)
- Refutation
- R(i);XB(I)
- Try
- R(G);
- Vars
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- S(h);OGATE,XR(G)::B(F),XS(h)
- B(k);N_GUARD::QAR2(C),XB(k)
- P(c);OGATEB::B(F),XS(b)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- Refutation
- R(i);XB(I)
- Try
- Q(C);
- Vars
- B(a);N_GUARD,XR(D)::S(E)
- B(a);OGATE,XP(H)::R1(G),XB(a)
- B(k);N_GUARD::QAR2(C),XB(k)
- P(c);OGATEB::B(F),XS(b)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(h);N_GUARD::B(F),XS(h)
- Refutation
- R(i);XB(I)
- Try
- Q(C);
- Vars
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(k);N_GUARD::QAR2(C),XB(k)
- P(c);OGATEB::B(F),XS(b)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- Refutation
- S(h);
- Try
- Actual
- K(B);P-FLIGHT
- Vars
- B(a);CHECK,OGATE,XP(H)::R1(G),XB(a)
- R(i);OGATE,XB(I)::R1(D),XR(i)
- B(a);N_GUARD,XR(D)::S(E)
- B(k);N_GUARD::QAR2(C),XB(k)
- B(a);N_GUARD::S(E),XB(a)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(h);N_GUARD::B(F),XS(h)
- P(c);OGATEB::B(F),XS(b)
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