MESON Chess Problem Database
Problem Display
PID: 218843 (6b1/2p1pp2/2Pk1P2/1P4NR/1P2RrN1/1Q3Bn1/1n5B/1K6 w - - 0 1)
Saunders, Denis M
The Problemist, 1987
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxf3
- 2.Rd4#
- 1...Rxe4
- 2.Sxe4#
- 1...Rxf6
- 2.Rd4#
- 1...Bh7
- 2.Sxf7#
- 1...Sd1
- 2.Qxd1#
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sa4
- 2.Qd1#
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Sf1
- 2.Rd4#
- 1...Sh1
- 2.Rd4#
- 1...Sxe4
- 2.Sxe4#
- 1...Sxh5
- 2.Rd4#
- 1...Rxf3
- Tries
- 1.Se3?
- threat
- 2.Qd5#
- 1...Rf5
- 2.Sxf5#
- 1...Sc4
- 2.Qd3#
- 1...e6!
- threat
- 1.Bxg3?
- threat
- 2.Rd4#
- 1...exf6
- 2.Bxf4#
- 1...Bh7
- 2.Sxf7#
- 1...e5!
- threat
- 1.Rxe7?
- threat
- 2.Rd7#
- 2.Qd5#
- 1...Rxf3
- 2.Se4#
- 2.Rd7#
- 1...Rxb4
- 2.Qd5#
- 2.Qxb4#
- 1...Rxg4
- 2.Qd5#
- 1...Rxf6
- 2.Rd7#
- 1...Rf5
- 2.Se4#
- 2.Rd7#
- 1...Rc4
- 2.Rd7#
- 1...Rd4
- 2.Rd7#
- 1...Re4
- 2.Sxe4#
- 2.Rd7#
- 1...Sc4
- 2.Rd7#
- 1...Se4
- 2.Sxe4#
- 2.Bxf4#
- 2.Rd7#
- 1...Bh7+!
- threat
- 1.Qd1+?
- 1...Sd3
- 2.Qxd3#
- 1...Sxd1!
- 1...Sd3
- 1.Qc3?
- threat
- 2.Qd4#
- 2.Qe5#
- 2.Qc5#
- 1...Kd5
- 2.Rd4#
- 2.Qd4#
- 2.Qe5#
- 2.Qc5#
- 1...Rxe4
- 2.Qc5#
- 1...Sxe4
- 2.Qd4#
- 2.Qe5#
- 1...exf6
- 2.Qd4#
- 2.Qc5#
- 1...Sd3
- 2.Qd4#
- 2.Qxd3#
- 1...Sa4
- 2.Qd2#
- 2.Qd4#
- 2.Qe5#
- 2.Qd3#
- 1...Sc4
- 2.Qd4#
- 2.Qd3#
- 1...Se2
- 2.Qe5#
- 2.Qc5#
- 1...Sf5
- 2.Qe5#
- 2.Qc5#
- 1...e5
- 2.Qxe5#
- 2.Qc5#
- 1...Rf5!
- threat
- 1.Qe3?
- threat
- 2.Qd4#
- 2.Qc5#
- 1...Kd5
- 2.Rd4#
- 2.Qd4#
- 2.Qc5#
- 1...Rxe4
- 2.Qc5#
- 1...Sxe4
- 2.Qd4#
- 1...Sd3
- 2.Qd4#
- 2.Qxd3#
- 1...Sa4
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Se2
- 2.Qc5#
- 1...Sf5
- 2.Qc5#
- 1...e5
- 2.Qc5#
- 1...Rf5!
- threat
- 1.Se3?
- Keys
- 1.Qxf7!
- threat
- 2.Re6#
- 1...Rxf3
- 2.Rd4#
- 1...Rxe4
- 2.Sxe4#
- 1...Rxf6
- 2.Rd4#
- 1...Bxf7
- 2.Sxf7#
- 1...Sxe4
- 2.Sxe4#
- 1...e6
- 2.Rxe6#
- 2.Qd7#
- 1...Bh7
- 2.Qe6#
- 1...e5
- 2.Qd7#
- threat
- 1.Qxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(c);N_GUARD,P_SPINS(b),XB(D)::R(F)
- R(c);P_SPINS(b),XR(F)::S(I),XR(c)
- R(c);N_GUARD,P_SPINS(b),XP(L)::R(F)
- B(h);N_GUARD,P_PINR(F)::S(I),XP(g)
- S(a);N_GUARD::QAR(C),XS(a)
- S(a);N_GUARD::QAR(C)
- S(b);P_SPINR(c)::R(F)
- S(b);P_SPINR(c),XR(F)::S(I),XS(b)
- S(b);P_SPINR(c),XR(J)::R(F)
- Tries
- Try
- S(G);
- Threat
- QAR1(C)
- Vars
- R(c);N_GUARD,P_SPINS(b)::S(G),XR(c)
- S(a);N_GUARD::QAR(C)
- Refutation
- P(f);
- Try
- B(B);P_PINR(c),XS(b)
- Threat
- R(F)
- Vars
- P(f);N_GUARD,XP(L)::B(B),XR(c)
- B(h);N_GUARD,P_PINR(F)::S(I),XP(g)
- Refutation
- P(f);N_SPINR(c)
- Try
- R(F);XP(f)
- Threat
- DUALS(2)
- Vars
- R(c);P_SPINS(b),XS(G)::QAR1(C)
- R(c);P_SPINS(b),XP(L)::R1(F)
- R(c);P_SPINS(b)::R1(F)
- S(a);::R1(F)
- Refutation
- B(h);CHECK
- Try
- Q(C);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR(C),XS(a)
- Refutation
- S(a);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(c);P_SPINS(b),XR(F)::QAB1(C)
- Refutation
- R(c);P_SPINS(b)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(c);P_SPINS(b),XR(F)::QAB1(C)
- S(b);P_SPINR(c),XR(F)::QAR2(C)
- S(b);P_SPINR(c)::QAB1(C)
- P(f);::QAB1(C)
- Refutation
- R(c);P_SPINS(b)
- Try
- Actual
- Q(C);XP(g)
- Threat
- R1(F)
- Vars
- R(c);N_GUARD,P_SPINS(b),XB(D)::R(F)
- R(c);P_SPINS(b),XR(F)::S(I),XR(c)
- R(c);N_GUARD,P_SPINS(b),XP(L)::R(F)
- B(h);XQ(C)::S(I),XB(h)
- S(b);P_SPINR(c),XR(F)::S(I),XS(b)
- B(h);N_GUARD,P_PINR(F)::QAR1(C)
- P(f);OGATE::QAR1(C)
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