MESON Chess Problem Database
Problem Display
PID: 94601 (3K2n1/3Pp3/3PR1Np/3B1kpp/2NR4/4B1P1/1pr5/nQb5 w - - 0 1)
Lester, William Edward
British Chess Magazine, 1931
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bd2
- 2.Qf1#
- 1...Bxe3
- 2.Sxe3#
- 1...Sb3
- 2.Qxc2#
- 1...Sf6
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...h4
- 2.g4#
- 1...exd6
- 2.Sxd6#
- 1...Bd2
- Tries
- 1.Ke8?
- 1...Bxe3
- 2.Sxe3#
- 1...exd6
- 2.Sxd6#
- 1...Bd2
- 2.Qf1#
- 1...Sb3
- 2.Qxc2#
- 1...g4
- 2.Sh4#
- 1...h4
- 2.g4#
- 1...Sf6+!
- 1...Bxe3
- 1.Sd2?
- 1...Bxd2
- 2.Qf1#
- 1...Sf6
- 2.Sxe7#
- 1...Sb3
- 2.Qxc2#
- 1...g4
- 2.Sh4#
- 1...h4
- 2.g4#
- 1...exd6!
- 1...Bxd2
- 1.Sh8?
- 1...Bxe3
- 2.Sxe3#
- 1...exd6
- 2.Sxd6#
- 1...Bd2
- 2.Qf1#
- 1...Sb3
- 2.Qxc2#
- 1...Sf6
- 2.Re5#
- 1...h4
- 2.g4#
- 1...g4!
- 1...Bxe3
- 1.Bd2?
- threat
- 2.Se3#
- 1...Sf6
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Bxd2!
- threat
- 1.Rde4?
- 1...Rxc4
- 2.Rf4#
- 1...Bxe3
- 2.Sxe3#
- 1...exd6
- 2.Sxd6#
- 1...Sf6
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 2.R4e5#
- 1...Rd2
- 2.Rf4#
- 1...Re2
- 2.Rf4#
- 1...Rf2
- 2.Rf4#
- 1...Rg2
- 2.Rf4#
- 1...Rh2
- 2.Rf4#
- 1...Rc3
- 2.Rf4#
- 1...Bd2
- 2.Qf1#
- 1...h4
- 2.g4#
- 1...Sb3!
- 1...Rxc4
- 1.Rh4?
- 1...Bxe3
- 2.Sxe3#
- 1...exd6
- 2.Sxd6#
- 1...Sf6
- 2.Sxe7#
- 1...g4
- 2.Rxh5#
- 1...Bd2
- 2.Qf1#
- 1...Sb3
- 2.Qxc2#
- 1...gxh4!
- 1...Bxe3
- 1.Ke8?
- Keys
- 1.Sf8!
- 1...Bxe3
- 2.Sxe3#
- 1...exd6
- 2.Sxd6#
- 1...Bd2
- 2.Qf1#
- 1...Sb3
- 2.Qxc2#
- 1...Sf6
- 2.Re5#
- 1...g4
- 2.Be4#
- 1...h4
- 2.g4#
- 1...Bxe3
- 1.Sf8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(b);OGATE::QAR(A)
- B(b);XB(B)::S(D),XB(b)
- S(a);N_GUARD::QAB(A),XR(d)
- S(j);N_GUARD::S(I),XP(i)
- P(f);N_GUARD::S(I)
- P(g);N_GUARD::P(C)
- P(i);XP(G)::S(D),XP(i)
- Tries
- Try
- K(K);P-FLIGHT
- Vars
- B(b);XB(B)::S(D),XB(b)
- P(i);XP(G)::S(D),XP(i)
- B(b);OGATE::QAR(A)
- S(a);N_GUARD::QAB(A),XR(d)
- P(f);N_GUARD::S(I)
- P(g);N_GUARD::P(C)
- Refutation
- S(j);CHECK
- Try
- S(D);
- Vars
- B(b);OGATE,XS(D)::QAR(A)
- S(j);N_GUARD::S(I),XP(i)
- S(a);N_GUARD::QAB(A),XR(d)
- P(f);N_GUARD::S(I)
- P(g);N_GUARD::P(C)
- Refutation
- P(i);XP(G)
- Try
- S(I);
- Vars
- B(b);XB(B)::S(D),XB(b)
- P(i);XP(G)::S(D),XP(i)
- B(b);OGATE::QAR(A)
- S(a);N_GUARD::QAB(A),XR(d)
- S(j);SBLOCK::R1(H)
- P(g);N_GUARD::P(C)
- Refutation
- P(f);
- Try
- B(B);
- Threat
- S(D)
- Vars
- S(j);N_GUARD::S(I),XP(i)
- P(f);N_GUARD::S(I)
- Refutation
- B(b);XB(B)
- Try
- R(E);N_PINR(d)
- Vars
- R(d);XS(D)::QAB(A)+R(E),DCHECK
- B(b);XB(B)::S(D),XB(b)
- P(i);XP(G)::S(D),XP(i)
- S(j);N_GUARD::S(I),XP(i)
- R(d);::QAB(A)+R(E),DCHECK
- B(b);OGATE::QAR(A)
- P(g);N_GUARD::P(C)
- Refutation
- S(a);
- Try
- R(E);
- Vars
- B(b);XB(B)::S(D),XB(b)
- P(i);XP(G)::S(D),XP(i)
- S(j);N_GUARD::S(I),XP(i)
- P(f);OGATEB,SBLOCK::R(E),XP(g)
- B(b);OGATE::QAR(A)
- S(a);N_GUARD::QAB(A),XR(d)
- Refutation
- P(f);XR(E)
- Try
- Actual
- S(I);
- Vars
- B(b);XB(B)::S(D),XB(b)
- P(i);XP(G)::S(D),XP(i)
- B(b);OGATE::QAR(A)
- S(a);N_GUARD::QAB(A),XR(d)
- S(j);SBLOCK::R1(H)
- P(f);SBLOCK::B(F)
- P(g);N_GUARD::P(C)
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