MESON Chess Problem Database
Problem Display
PID: 10820 (4R3/1BNpp2p/2pPb3/r1p1N1Qn/2pPk3/1r3pP1/2P2K2/3R4 w - - 0 1)
Nair, EP
The Problemist, 1968
#2
11 + 12
| 5862 | An ABC of Chess Problems | 1970 |
| 56 | The Problemist | 2001 |
| 56 | The Problemist | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Sf4
- 2.Qxf4#
- 1...Sf6
- 2.Qf4#
- 1...Sg7
- 2.Qf4#
- 1...Sf4
- Tries
- 1.Sd3?
- threat
- 2.Qe5#
- 1...Kxd4
- 2.Qe5#
- 1...cxd4
- 2.Re1#
- 1...Bf5
- 2.Qe3#
- 1...exd6!
- threat
- 1.Sxc4?
- threat
- 2.Qe5#
- 1...cxd4
- 2.Sd2#
- 1...exd6
- 2.Sxd6#
- 1...Bf5!
- threat
- 1.Sxd7?
- threat
- 2.Qe5#
- 1...exd6
- 2.Rxe6#
- 1...Bf5
- 2.Bxc6#
- 1...cxd4!
- threat
- 1.Bxc6+?
- 1...Bd5
- 2.Bxd5#
- 1...dxc6!
- 1...Bd5
- 1.Qg4+?
- 1...Sf4
- 2.Qxf4#
- 1...Bxg4!
- 1...Sf4
- 1.Sd3?
- Keys
- 1.Sxc6!
- threat
- 2.Qe5#
- 1...cxd4
- 2.Rxd4#
- 1...exd6
- 2.Qd5#
- 1...Bf5
- 2.Sb4#
- threat
- 1.Sxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- S(g);N_GUARD::QAR1(G),XS(g)
- S(g);N_GUARD::QAR1(G)
- Tries
- Try
- S(F);
- Threat
- QAR1(G)
- Vars
- K(d);N_SPINP(h),P-FLIGHT,XP(E)::QAB1(G)
- P(f);SBLOCK,XP(E)::R(A)
- B(i);SBLOCK::QAR1(G)
- Refutation
- P(k);P_SPINB(i),XP(H)
- Try
- S(F);XP(c)
- Threat
- QAR1(G)
- Vars
- P(f);SBLOCK,XP(E)::S(F)
- P(k);P_SPINB(i),XP(H)::S(F),XP(k)
- Refutation
- B(i);
- Try
- S(F);XP(j)
- Threat
- QAR1(G)
- Vars
- P(k);OGATE,P_SPINB(i),XP(H)::R(K),XB(i)
- B(i);N_GUARD::B(I),XP(h)
- Refutation
- P(f);XP(E)
- Try
- B(I);CHECK,XP(h)
- Vars
- B(i);N_GUARD,P_SPINB(i)::B(I),XB(i)
- Refutation
- P(j);XB(I)
- Try
- Q(G);CHECK
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAR1(G),XS(g)
- Refutation
- B(i);XQ(G)
- Try
- Actual
- S(F);XP(h)
- Threat
- QAR1(G)
- Vars
- P(f);OGATE,XP(E)::R1(A),XP(f)
- P(k);P_SPINB(i),XP(H)::QAB1(G)
- B(i);N_GUARD,P_SPINP(k)::B(I)+S(F)
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