MESON Chess Problem Database
Problem Display
PID: 76998 (1n6/4n3/3RpRP1/1PN1k3/1P2N2P/K3B1r1/Pp3p1Q/1B4q1 w - - 0 1)
Shire, David J
The Problemist, 2007
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Qxg3#
- 1...Qc1
- 2.Qxg3#
- 1...Qd1
- 2.Qxg3#
- 1...Qe1
- 2.Qxg3#
- 1...Qf1
- 2.Qxg3#
- 1...Qh1
- 2.Qxg3#
- 1...Sd5
- 2.Rdxe6#
- 1...Sf5
- 2.Rfxe6#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...f1Q
- 2.Qxb2#
- 1...f1S
- 2.Qxb2#
- 1...f1B
- 2.Qxb2#
- 1...f1R
- 2.Qxb2#
- 1...Qxb1
- Tries
- 1.Ka4?
- threat
- 2.Bd4#
- 2.Bf4#
- 1...Sxg6
- 2.Bd4#
- 1...f1Q
- 2.Qxb2#
- 1...f1S
- 2.Bf4#
- 2.Qxb2#
- 1...f1B
- 2.Bf4#
- 2.Qxb2#
- 1...f1R
- 2.Qxb2#
- 1...Qc1
- 2.Bd4#
- 2.Qxg3#
- 1...Sd5
- 2.Rdxe6#
- 1...Sf5
- 2.Rfxe6#
- 1...Sec6
- 2.Bf4#
- 1...Sbc6
- 2.Sd7#
- 2.Bf4#
- 1...Qd1+!
- threat
- 1.Sxg3?
- threat
- 2.Rfxe6#
- 1...Kxf6
- 2.Sh5#
- 2.Bd4#
- 1...Kxd6!
- threat
- 1.Sb3?
- threat
- 2.Bd4#
- 2.Bf4#
- 1...Sxg6
- 2.Bd4#
- 1...f1Q
- 2.Qxb2#
- 1...f1S
- 2.Bf4#
- 2.Qxb2#
- 1...f1B
- 2.Bf4#
- 2.Qxb2#
- 1...f1R
- 2.Qxb2#
- 1...Qc1
- 2.Bd4#
- 2.Qxg3#
- 1...Qd1
- 2.Bf4#
- 2.Qxg3#
- 1...Sd5
- 2.Bd4#
- 2.Rdxe6#
- 1...Sf5
- 2.Rfxe6#
- 1...Sec6
- 2.Bf4#
- 1...Sbc6
- 2.Bf4#
- 1...Qxb1!
- threat
- 1.Bd3?
- threat
- 2.Bd4#
- 2.Bf4#
- 1...Sxg6
- 2.Bd4#
- 1...f1Q
- 2.Qxb2#
- 1...f1S
- 2.Bf4#
- 2.Qxb2#
- 1...f1B
- 2.Bf4#
- 2.Qxb2#
- 1...f1R
- 2.Qxb2#
- 1...Qc1
- 2.Bd4#
- 2.Qxg3#
- 1...Sd5
- 2.Rdxe6#
- 1...Sf5
- 2.Rfxe6#
- 1...Sec6
- 2.Bf4#
- 1...Sbc6
- 2.Sd7#
- 2.Bf4#
- 1...b1S+!
- threat
- 1.Rd3?
- threat
- 2.Bf4#
- 1...f1Q
- 2.Qxb2#
- 1...f1R
- 2.Qxb2#
- 1...Qc1
- 2.Qxg3#
- 1...Sd5
- 2.Bd4#
- 1...Sf5
- 2.Rxe6#
- 1...Sxg6!
- threat
- 1.Rf3?
- threat
- 2.Bd4#
- 1...f1Q
- 2.Qxb2#
- 1...f1S
- 2.Qxb2#
- 1...f1B
- 2.Qxb2#
- 1...f1R
- 2.Qxb2#
- 1...Qd1
- 2.Qxg3#
- 1...Sd5
- 2.Rxe6#
- 1...Sf5
- 2.Bf4#
- 1...Sbc6
- 2.Sd7#
- 1...Sec6!
- threat
- 1.Ka4?
- Keys
- 1.Sc3!
- threat
- 2.Rdxe6#
- 2.Rfxe6#
- 1...Kxd6
- 2.Bf4#
- 1...Kxf6
- 2.Bd4#
- 1...Qxb1
- 2.Rdxe6#
- threat
- 1.Sc3!
This is a version of 15877
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD,XB(A)::QAB(C),XR(d)
- Q(a);N_GUARD::QAB(C),XR(d)
- S(g);SBLOCK::R1(K),XP(f)
- S(g);SBLOCK::R1(L),XP(f)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(c);OGATE::QAB(C),XP(b)
- Tries
- Try
- K(D);N_SPINB(E),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- S(g);XP(M)::B(E)
- P(c);OGATE::QAB(C),XP(b)
- S(g);SBLOCK::R1(K),XP(f)
- S(g);SBLOCK::R1(L),XP(f)
- S(g);::B(E)
- Refutation
- Q(a);CHECK
- Try
- S(G);N_SPINB(E),XR(d)
- Threat
- R1(L),XP(f)
- Refutation
- K(e);P_SPINP(f),S_FLIGHT,XR(K)
- Try
- S(J);N_SPINB(E)
- Threat
- DUALS(2)
- Vars
- S(g);XP(M)::B(E)
- P(c);OGATE::QAB(C),XP(b)
- S(g);SBLOCK::R1(L),XP(f)
- S(g);::B(E)
- S(h);::B(E)
- Refutation
- Q(a);XB(A)
- Try
- B(A);N_SPINB(E)
- Threat
- DUALS(2)
- Vars
- S(g);XP(M)::B(E)
- P(c);OGATE::QAB(C),XP(b)
- S(g);SBLOCK::R1(K),XP(f)
- S(g);SBLOCK::R1(L),XP(f)
- S(g);::B(E)
- Refutation
- P(b);CHECK
- Try
- R(K);N_SPINB(E)
- Threat
- B(E)
- Vars
- P(c);OGATE::QAB(C),XP(b)
- Q(a);N_GUARD::QAB(C),XR(d)
- S(g);SBLOCK::B(E)
- S(g);SBLOCK::R1(L),XP(f)
- Refutation
- S(g);XP(M)
- Try
- R(L);N_SPINB(E)
- Threat
- B(E)
- Vars
- P(c);OGATE::QAB(C),XP(b)
- Q(a);N_GUARD::QAB(C),XR(d)
- S(g);SBLOCK::R1(K),XP(f)
- S(g);SBLOCK::B(E)
- S(h);N_GUARD::S(J)
- Refutation
- S(g);
- Try
- Actual
- S(G);N_SPINB(E)
- Threat
- DUALS(2)
- Vars
- K(e);P_SPINP(f),S_FLIGHT,XR(K)::B(E)
- K(e);N_SPINR(d),P_SPINP(f),S_FLIGHT,XR(L)::B(E)
- Q(a);XB(A)::R1(K),XP(f)
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