MESON Chess Problem Database
Problem Display
PID: 141407 (1n1n1rqb/4p3/1N1R2p1/2p1k3/2P2R1p/2K2P2/3Q4/2B5 w - - 0 1)
Markwick, Frederick W
Source?, 1882
#2
8 + 10
| 14867 | BCPS Library | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qxc4+
- 2.Sxc4#
- 1...Qd5
- 2.Qxd5#
- 1...Qh7
- 2.Qd5#
- 1...Qg7
- 2.Qd5#
- 1...Rxf4
- 2.Qxf4#
- 1...Rf5
- 2.Re4#
- 1...Rf7
- 2.Qd5#
- 1...Sa6
- 2.Sd7#
- 1...Sbc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Se6
- 2.Rd5#
- 2.Qd5#
- 1...Sf7
- 2.Qd5#
- 1...exd6
- 2.Qe1#
- 2.Qe3#
- 2.Qe2#
- 1...Qxc4+
- Tries
- 1.Kc2?
- threat
- 2.Bb2#
- 1...Qxc4+
- 2.Sxc4#
- 1...Rxf4
- 2.Qxf4#
- 1...exd6
- 2.Qe1#
- 2.Qe3#
- 2.Qe2#
- 1...Qd5
- 2.Qxd5#
- 1...Sbc6
- 2.Sd7#
- 1...Se6
- 2.Rd5#
- 2.Qd5#
- 1...Sdc6!
- threat
- 1.Kb3?
- threat
- 2.Bb2#
- 1...Qxc4+
- 2.Sxc4#
- 1...Rxf4
- 2.Qxf4#
- 1...exd6
- 2.Qe1#
- 2.Qe3#
- 2.Qe2#
- 1...Qd5
- 2.Qxd5#
- 1...Sbc6
- 2.Sd7#
- 1...Se6
- 2.Rd5#
- 2.Qd5#
- 1...Sdc6!
- threat
- 1.Sc8?
- threat
- 2.Qe1#
- 2.Qe3#
- 2.Qe2#
- 1...Rxf4
- 2.Qxf4#
- 1...Qd5
- 2.Qxd5#
- 1...Qxc4+!
- threat
- 1.Rf7?
- threat
- 2.Qf4#
- 2.Qh2#
- 2.Qd5#
- 1...Rxf7
- 2.Qd5#
- 1...Sxf7
- 2.Qf4#
- 2.Qd5#
- 1...exd6
- 2.Qe1#
- 2.Qe3#
- 2.Qe2#
- 2.Qd5#
- 1...Bf6
- 2.Qf4#
- 2.Qd5#
- 1...Se6
- 2.Rd5#
- 2.Qd5#
- 1...g5
- 2.Qh2#
- 2.Qd5#
- 1...e6
- 2.Qf4#
- 2.Qh2#
- 1...Qxf7!
- threat
- 1.Rxf8?
- threat
- 2.Qf4#
- 2.Qh2#
- 1...Qxc4+
- 2.Sxc4#
- 1...Qxf8
- 2.Qd5#
- 1...exd6
- 2.Qe1#
- 2.Qe3#
- 2.Qe2#
- 1...Bf6
- 2.Qf4#
- 1...Sf7
- 2.Qf4#
- 2.Qd5#
- 1...Se6
- 2.Rd5#
- 2.Qd5#
- 1...g5
- 2.Qh2#
- 1...Qf7!
- threat
- 1.Rd5+?
- 1...Qxd5
- 2.Qxd5#
- 1...Ke6+!
- 1...Qxd5
- 1.Kc2?
- Keys
- 1.Qh2!
- threat
- 2.Rff6#
- 2.Rf7#
- 2.Rxf8#
- 1...Kxd6+
- 2.Rf6#
- 1...Qxc4+
- 2.Sxc4#
- 1...Rxf4
- 2.Qxf4#
- 1...exd6
- 2.Qe2#
- 1...Qe6
- 2.Rf7#
- 2.Rxf8#
- 1...Qf7
- 2.Rff6#
- 2.Rxf7#
- 1...Rf5
- 2.Re4#
- 1...Rf6
- 2.Rfxf6#
- 1...Rf7
- 2.Rff6#
- 2.Rxf7#
- 1...Re8
- 2.Rff6#
- 2.Rf7#
- 2.Rf8#
- 1...Bf6
- 2.Rfxf6#
- 1...Se6
- 2.Rd5#
- 1...Sf7
- 2.Rff6#
- 2.Rxf7#
- 1...e6
- 2.Rf7#
- 2.Rxf8#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- Q(i);CHECK,XP(E)::S(G),XQ(i)
- Q(i);N_GUARD::QAR1(B),XQ(i)
- Q(i);N_GUARD::QAR1(B)
- R(h);OGATE,XR(F)::QAB1(B),XR(h)
- R(h);SBLOCK::R1(F)
- R(h);S_CUTQ(i)::QAR1(B)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);S_CUTQ(i)::QAR1(B)
- Tries
- Try
- K(C);P-FLIGHT
- Threat
- B(A)
- Vars
- Q(i);CHECK,XP(E)::S(G),XQ(i)
- R(h);OGATE,XR(F)::QAB1(B),XR(h)
- Q(i);N_GUARD::QAR1(B),XQ(i)
- S(f);N_GUARD::S(G)
- Refutation
- S(g);
- Try
- K(C);P-FLIGHT,P_SPINP(E)
- Threat
- B(A)
- Vars
- Q(i);CHECK,XP(E)::S(G),XQ(i)
- R(h);OGATE,XR(F)::QAB1(B),XR(h)
- Q(i);N_GUARD::QAR1(B),XQ(i)
- S(f);N_GUARD::S(G)
- Refutation
- S(g);
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- R(h);OGATE,XR(F)::QAB1(B),XR(h)
- Q(i);N_GUARD::QAR1(B),XQ(i)
- Refutation
- Q(i);CHECK,XP(E)
- Try
- R(F);
- Threat
- DUALS(3)
- Vars
- R(h);XR(F)::QAR1(B)
- Refutation
- Q(i);XR(F)
- Try
- R(F);XR(h)
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,XP(E)::S(G),XQ(i)
- Q(i);N_GUARD,XR(F)::QAR1(B)
- B(j);::QAB1(B)
- P(d);::QAB(B)
- Refutation
- Q(i);
- Try
- R(H);CHECK
- Vars
- Q(i);OGATE,XR(H)::QAR1(B),XQ(i)
- Refutation
- K(c);CHECK,P-FLIGHT
- Try
- Actual
- Q(B);
- Threat
- DUALS(3)
- Vars
- K(c);CHECK,S_FLIGHT,XR(H)::QAB(B)+R(F),DCHECK
- Q(i);CHECK,XP(E)::S(G),XQ(i)
- R(h);OGATE,P_SPINR(h),XR(F)::QAB1(B),XR(h)
- P(e);SBLOCK,XR(H)::QAR(B)
- R(h);SBLOCK::QAB(B)+R(F),DCHECK
- R(h);::QAB(B)+R(F),XR(h)
- B(j);::QAB(B)+R(F),XB(j)
- S(g);SBLOCK,S_CUTQ(i)::R1(H)
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