MESON Chess Problem Database
Problem Display
PID: 161797 (b1NK3B/3QR2p/7r/p1p4p/2k1P3/nRN5/P6r/2b1n3 w - - 0 1)
Driver, John Edward
Chess, 1956
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Rb6
- 2.Sxb6#
- 1...Rc6
- 2.Qd5#
- 1...Bxe4
- 2.Rxe4#
- 1...Bd5
- 2.Qxd5#
- 1...Bc6
- 2.Sb6#
- 1...Sb1
- 2.Qb5#
- 1...Sc2
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...Rb6
- Tries
- 1.Sb1?
- threat
- 2.Qa4#
- 1...Bxe4
- 2.Rxe4#
- 1...Rb6
- 2.Sxb6#
- 1...Rc6
- 2.Qd5#
- 1...Rd6
- 2.Sxd6#
- 1...Bd2
- 2.Sxa3#
- 1...Bc6
- 2.Sb6#
- 1...Sec2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sac2
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...a4
- 2.Qxa4#
- 1...Rd2!
- threat
- 1.Se2?
- threat
- 2.Qa4#
- 1...Bxe4
- 2.Rxe4#
- 1...Rb6
- 2.Sxb6#
- 1...Rc6
- 2.Qd5#
- 1...Rd6
- 2.Sxd6#
- 1...Bc6
- 2.Sb6#
- 1...Sec2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sac2
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...a4
- 2.Qxa4#
- 1...Bd2!
- threat
- 1.Rb4+?
- 1...Kxb4
- 2.Qa4#
- 1...cxb4
- 2.Qd4#
- 1...axb4!
- 1...Kxb4
- 1.Sb1?
- Keys
- 1.Sd1!
- threat
- 2.Qa4#
- 1...Bxe4
- 2.Rxe4#
- 1...Rd2
- 2.Se3#
- 1...Rb6
- 2.Sxb6#
- 1...Rc6
- 2.Qd5#
- 1...Rd6
- 2.Sxd6#
- 1...Bd2
- 2.Sb2#
- 1...Bc6
- 2.Sb6#
- 1...Sec2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sac2
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...a4
- 2.Qxa4#
- threat
- 1.Sd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- R(i);N_GUARD::S(G),XR(i)
- R(i);S_CUTB(k)::QAB1(E)
- B(k);OGATE,XP(D)::R(F),XB(k)
- B(k);N_GUARD::QAB1(E),XB(k)
- B(k);S_CUTR(i)::S(G)
- S(d);N_GUARD::QAB1(E)
- S(d);N_GUARD::QAB1(E),XS(d)
- Tries
- Try
- S(C);
- Threat
- QAR2(E)
- Vars
- B(k);OGATE,XP(D)::R(F),XB(k)
- R(i);N_GUARD::S(G),XR(i)
- R(i);S_CUTB(k)::QAB1(E)
- R(i);N_GUARD,P_PINQ(E)::S(G),XR(i)
- B(a);N_GUARD::S(C),XS(d)
- B(k);S_CUTR(i)::S(G)
- S(b);N_GUARD::QAB1(E)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(d);N_GUARD::QAB1(E)
- S(d);N_GUARD::QAB1(E),XS(d)
- P(f);::QAR2(E),XP(f)
- Refutation
- R(c);P_PINQ(E)
- Try
- S(C);
- Threat
- QAR2(E)
- Vars
- B(k);OGATE,XP(D)::R(F),XB(k)
- R(i);N_GUARD::S(G),XR(i)
- R(i);S_CUTB(k)::QAB1(E)
- R(i);N_GUARD,P_PINQ(E)::S(G),XR(i)
- B(k);S_CUTR(i)::S(G)
- S(b);N_GUARD::QAB1(E)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(d);N_GUARD::QAB1(E)
- S(d);N_GUARD::QAB1(E),XS(d)
- P(f);::QAR2(E),XP(f)
- Refutation
- B(a);
- Try
- R(B);CHECK
- Vars
- K(e);P-FLIGHT,XR(B)::QAR1(E)
- P(g);SBLOCK,XR(B)::QAR1(E)
- Refutation
- P(f);XR(B)
- Try
- Actual
- S(C);
- Threat
- QAR2(E)
- Vars
- B(k);OGATE,XP(D)::R(F),XB(k)
- R(c);P_PINQ(E),S_CUTB(a)::S(C)
- R(i);N_GUARD::S(G),XR(i)
- R(i);S_CUTB(k)::QAB1(E)
- R(i);N_GUARD,P_PINQ(E)::S(G),XR(i)
- B(a);N_GUARD,S_CUTR(c)::S(C)
- B(k);S_CUTR(i)::S(G)
- S(b);N_GUARD::QAB1(E)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(d);N_GUARD::QAB1(E)
- S(d);N_GUARD::QAB1(E),XS(d)
- P(f);::QAR2(E),XP(f)
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