MESON Chess Problem Database
Problem Display
PID: 180756 (3r1N2/1P4n1/pKN1R3/3k4/5p2/3B3Q/b7/4n3 w - - 0 1)
Shire, David J
1st Prize, Bertin MT, 1991
#2
7 + 7
| 702 | Phenix | 1991 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Re5#
- 1...Bc4
- 2.Be4#
- 1...Sc2
- 2.Qf3#
- 1...Sg2
- 2.Qf3#
- 1...Sxd3
- 2.Qxd3#
- 1...Sf3
- 2.Qxf3#
- 1...Sf5
- 2.Qxf5#
- 1...Sh5
- 2.Qf5#
- 2.Qxh5#
- 1...Sxe6
- 2.Qxe6#
- 1...Se8
- 2.Qf5#
- 2.Qh5#
- 1...Rd6
- Tries
- 1.Re8?
- threat
- 2.Rxd8#
- 1...Kd6
- 2.Rxd8#
- 1...Rxe8
- 2.Qd7#
- 1...Sxd3
- 2.Qxd3#
- 1...Sxe8
- 2.Qe6#
- 1...Rd6
- 2.Re5#
- 1...Rd7
- 2.Qxd7#
- 1...Ra8
- 2.Qd7#
- 1...Rb8
- 2.Qd7#
- 1...Rc8
- 2.Qd7#
- 1...Se6
- 2.Qxe6#
- 1...Sf5!
- threat
- 1.Qg2+?
- 1...Sf3
- 2.Qxf3#
- 2.Qxa2#
- 1...f3
- 2.Qxa2#
- 1...Sxg2!
- 1...Sf3
- 1.Qe3?
- threat
- 2.Sb4#
- 2.Se7#
- 2.Qd4#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 1...Rxf8
- 2.Sb4#
- 2.Se7#
- 2.Qe4#
- 2.Qe5#
- 1...Sxd3
- 2.Qd4#
- 2.Qxd3#
- 2.Qe4#
- 1...Sxe6
- 2.Qe5#
- 2.Qxe6#
- 1...Rd6
- 2.Re5#
- 2.Qd4#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 1...Rd7
- 2.Sb4#
- 2.Qd4#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 1...Re8
- 2.Sb4#
- 2.Qd4#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 1...Sc2
- 2.Se7#
- 2.Qc5#
- 2.Qf3#
- 2.Qe4#
- 2.Qe5#
- 1...Sf3
- 2.Sb4#
- 2.Se7#
- 2.Qc5#
- 2.Qxf3#
- 2.Qe4#
- 1...Sf5
- 2.Sb4#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 1...a5
- 2.Se7#
- 2.Qd4#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 1...fxe3!
- threat
- 1.Qh5+?
- 1...Sf5
- 2.Qxf5#
- 1...Sxh5!
- 1...Sf5
- 1.Qh7?
- threat
- 2.Qe4#
- 1...Sf5
- 2.Qxf5#
- 1...Sxe6!
- threat
- 1.b8Q?
- threat
- 2.Re5#
- 2.Qe5#
- 2.Qxd8#
- 1...Rxf8
- 2.Re5#
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Sxd3
- 2.Qxd3#
- 1...Sxe6
- 2.Qf5#
- 2.Qxe6#
- 2.Qe5#
- 1...Rd6
- 2.Re5#
- 2.Rxd6#
- 2.Qxd6#
- 1...Rd7
- 2.Re5#
- 2.Qe5#
- 1...Rc8
- 2.Re5#
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Re8
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Sf3
- 2.Qxf3#
- 2.Qxd8#
- 1...Sf5
- 2.Re5#
- 2.Qxf5#
- 2.Qe5#
- 1...Se8
- 2.Re5#
- 2.Qf5#
- 2.Qe5#
- 2.Qh5#
- 1...Rxb8+!
- threat
- 1.b8B?
- threat
- 2.Re5#
- 1...Sxd3
- 2.Qxd3#
- 1...Sxe6
- 2.Qf5#
- 2.Qxe6#
- 1...Re8
- 2.Rd6#
- 1...Sf3
- 2.Qxf3#
- 1...Rxb8+!
- threat
- 1.Re8?
- Keys
- 1.Bb1!
- threat
- 2.Bxa2#
- 1...Kc4
- 2.Bxa2#
- 1...Bxb1
- 2.Qb3#
- 1...Sxe6
- 2.Qxe6#
- 1...Bb3
- 2.Qxb3#
- 1...Bc4
- 2.Be4#
- threat
- 1.Bb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(g);P_PINS(D),SBLOCK::R1(E)
- B(b);SBLOCK::B(A)
- S(a);N_GUARD::QAB(B)
- S(a);OGATE,XB(A)::QAR2(B),XS(a)
- S(a);N_GUARD::QAB(B),XS(a)
- S(f);N_GUARD::QAR2(B),XS(f)
- S(f);OGATE,XR(E)::QAB1(B),XS(f)
- Tries
- Try
- R(E);
- Threat
- R(E),XR(g)
- Vars
- K(d);P-FLIGHT::R(E),XR(g)
- R(g);N_GUARD,XR(E)::QAR2(B)
- S(a);OGATE,XB(A)::QAR2(B),XS(a)
- S(f);N_GUARD,XR(E)::QAB1(B)
- R(g);P_PINS(D),SBLOCK::R1(E)
- R(g);N_GUARD::QAR2(B),XR(g)
- R(g);N_GUARD::QAR2(B)
- R(g);N_GUARD,P_PINP(F)::QAR2(B)
- S(f);N_GUARD::QAB1(B),XS(f)
- Refutation
- S(f);
- Try
- Q(B);CHECK
- Vars
- P(c);P_SPINP(c)::QAB(B),XB(b)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(6)
- Refutation
- P(c);XQ(B)
- Try
- Q(B);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAR2(B),XS(f)
- Refutation
- S(f);XQ(B)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- S(f);N_GUARD::QAR2(B),XS(f)
- Refutation
- S(f);XR(E)
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- S(a);OGATE,XB(A)::QAR2(B),XS(a)
- Refutation
- R(g);CHECK,XQ(F)
- Try
- P(F);
- Threat
- R1(E)
- Vars
- S(a);OGATE,XB(A)::QAR2(B),XS(a)
- R(g);N_GUARD::R1(E)
- S(a);N_GUARD::QAB(B),XS(a)
- Refutation
- R(g);CHECK,XB(F)
- Try
- Actual
- B(A);
- Threat
- B(A),XB(b)
- Vars
- K(d);S_FLIGHT::B(A),XB(b)
- B(b);N_GUARD,XB(A)::QAB(B)
- S(f);OGATE,XR(E)::QAB1(B),XS(f)
- B(b);N_GUARD::QAB(B),XB(b)
- B(b);SBLOCK::B(A)
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