MESON Chess Problem Database
Problem Display
PID: 10700 (4nq1r/b2NpN1Q/2P1k1P1/r2p4/1BP3P1/7R/b3P3/3R1KnB w - - 0 1)
Boyer, Jean-Pierre
2nd Prize, Main-Post, 1967-1968
#2
13 + 10
| 4655 | Michael Keller Ein Meister der Schachkomposition | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Qh6
- 2.Sd8#
- 1...Qg7
- 2.Sg5#
- 2.Sd8#
- 1...Qxf7+
- 2.Qxf7#
- 1...Qg8
- 2.Sg5#
- 2.Sd8#
- 1...Ra3
- 2.Bxd5#
- 1...Ra4
- 2.Bxd5#
- 1...Rc5
- 2.Re3#
- 1...Ra6
- 2.Bxd5#
- 1...Bf2
- 2.Sg5#
- 2.Sd8#
- 1...Be3
- 2.Rxe3#
- 1...Bc5
- 2.Bxd5#
- 1...Sf3
- 2.Sd8#
- 1...Sf6
- 2.Sg5#
- 1...Qh6
- Tries
- 1.Kg2?
- threat
- 2.Sg5#
- 2.Sd8#
- 1...Qxf7
- 2.Qxf7#
- 1...Sxh3
- 2.Sd8#
- 1...dxc4
- 2.Sd8#
- 1...Qh6
- 2.Sd8#
- 1...Rc5
- 2.Re3#
- 1...Be3
- 2.Sd8#
- 2.Rxe3#
- 1...Bb6
- 2.Sg5#
- 1...Sf3
- 2.Sd8#
- 1...Sd6
- 2.Sg5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Sg5#
- 1...Sg7
- 2.Sg5#
- 1...d4
- 2.Sd8#
- 1...Bc5!
- threat
- 1.Bf3?
- threat
- 2.Sg5#
- 2.Sd8#
- 1...Qxf7
- 2.Qxf7#
- 1...Sxf3
- 2.Sd8#
- 1...Sxh3
- 2.Sd8#
- 1...dxc4
- 2.Sd8#
- 1...Qh6
- 2.Sd8#
- 1...Be3
- 2.Sd8#
- 1...Bc5
- 2.Bxd5#
- 1...Bb6
- 2.Sg5#
- 1...Sd6
- 2.Sg5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Sg5#
- 1...Sg7
- 2.Sg5#
- 1...d4
- 2.Sd8#
- 1...Rc5!
- threat
- 1.Rf3?
- threat
- 2.Sg5#
- 2.Sd8#
- 1...Qxf7
- 2.Qxf7#
- 1...Sxf3
- 2.Sd8#
- 1...dxc4
- 2.Sd8#
- 1...Qh6
- 2.Sd8#
- 1...Rc5
- 2.Re3#
- 1...Be3
- 2.Sd8#
- 2.Rxe3#
- 1...Bb6
- 2.Sg5#
- 1...Sh3
- 2.Sd8#
- 1...Sd6
- 2.Sg5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Sg5#
- 1...Sg7
- 2.Sg5#
- 1...d4
- 2.Sd8#
- 1...Bc5!
- threat
- 1.Kg2?
- Keys
- 1.Bc5!
- threat
- 2.Bxd5#
- 2.Re3#
- 1...Qxf7+
- 2.Qxf7#
- 1...Rxc5
- 2.Re3#
- 1...Bxc4
- 2.Re3#
- 1...Bxc5
- 2.Bxd5#
- 1...Sxh3
- 2.Bxd5#
- 1...dxc4
- 2.Bd5#
- 2.Re3#
- 1...Qh6
- 2.Sd8#
- 2.Bxd5#
- 1...Qg7
- 2.Sg5#
- 2.Sd8#
- 2.Bxd5#
- 1...Ra3
- 2.Bxd5#
- 1...Bb1
- 2.Bxd5#
- 2.cxd5#
- 1...Bb8
- 2.Bxd5#
- 1...Sf3
- 2.Sd8#
- 1...Sd6
- 2.Bxd5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Re3#
- 1...d4
- 2.Bd5#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 4
- Sets
- Q(i);N_PINS(L)::S(L)
- Q(i);CHECK,OGATE,XS(L)::QAB1(M),XQ(i)
- R(c);N_GUARD::B(C),XP(d)
- R(c);S_CUTB(f)::R(E)
- B(f);N_GUARD::R(E),XB(f)
- B(f);S_CUTR(c)::B(C),XP(d)
- S(a);N_PINS(L)::S(L)
- S(h);N_PINS(L)::S(L)
- Tries
- Try
- K(B);N_SPINS(L),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,XS(L)::QAB1(M),XQ(i)
- S(a);XR(E)::S(L)
- P(d);XP(G)::S(L)
- Q(i);::S(L)
- R(c);S_CUTB(f)::R(E)
- B(f);::S(L)
- S(a);::S(L)
- S(h);::S(L)
- P(d);::S(L)
- Refutation
- B(f);
- Try
- B(C);N_SPINS(L)
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,P_PINB(C),XS(L)::QAB1(M),XQ(i)
- S(a);XB(C)::S(L)
- S(a);XR(E)::S(L)
- P(d);XP(G)::S(L)
- Q(i);::S(L)
- B(f);::S(L)
- B(f);S_CUTR(c)::B(C),XP(d)
- S(h);::S(L)
- P(d);::S(L)
- Refutation
- R(c);
- Try
- R(E);N_SPINS(L)
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,P_PINR(E),XS(L)::QAB1(M),XQ(i)
- S(a);XR(E)::S(L)
- P(d);XP(G)::S(L)
- Q(i);::S(L)
- R(c);S_CUTB(f)::R(E)
- B(f);::S(L)
- S(a);::S(L)
- S(h);::S(L)
- P(d);::S(L)
- Refutation
- B(f);
- Try
- Actual
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,OGATE,XS(L)::QAB1(M),XQ(i)
- R(c);XB(F)::R(E)
- B(b);P_PINP(D),XP(G)::R(E)
- B(f);XB(F)::B(C),XP(d)
- S(a);XR(E)::B(C),XP(d)
- R(c);::B(C),XP(d)
- B(f);::B(C),XP(d)
- S(a);N_PINS(L)::S(L)
- S(h);::B(C),XP(d)
- S(h);N_PINS(L)::S(L)
- S(h);::R(E)
- P(d);::B(C)
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