MESON Chess Problem Database
Problem Display
PID: 48330 (8/2pbrQNn/2pR2P1/1P2p2R/4k1NP/r6n/B1P2bP1/2B4K w - - 0 1)
van Dooren, Rene
1st Prize, The Problemist, 1987
#2
13 + 10
| 721 | Variantim | 1990 |
| 3297 | FIDE Album (1986-1988) | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Rxa2
- 2.Qf3#
- 1...Rd3
- 2.cxd3#
- 1...Re3
- 2.Qc4#
- 1...Rf3
- 2.Qxf3#
- 2.gxf3#
- 1...Ra4
- 2.Qf3#
- 1...Ra5
- 2.Qf3#
- 1...Ra6
- 2.Qf3#
- 1...Ra7
- 2.Qf3#
- 1...Ra8
- 2.Qf3#
- 1...Re6
- 2.Qf5#
- 1...Rxf7
- 2.Rxe5#
- 1...Be1
- 2.Qc4#
- 1...Be3
- 2.Qf3#
- 1...Bg3
- 2.Qc4#
- 1...Bxh4
- 2.Qc4#
- 1...Bf5
- 2.Qxf5#
- 1...Be6
- 2.Rxe5#
- 1...Be8
- 2.Qf5#
- 1...Sg1
- 2.Sxf2#
- 1...Sf4
- 2.Sxf2#
- 1...S3g5
- 2.Sxf2#
- 1...S7g5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...cxb5
- 2.Qd5#
- 1...c5
- 2.Qd5#
- 1...Rxa2
- Tries
- 1.Se3?
- threat
- 2.Qc4#
- 2.Qf3#
- 1...Rxe3
- 2.Qc4#
- 1...Bxe3
- 2.Qf3#
- 1...cxb5
- 2.Qf3#
- 1...cxd6
- 2.Qc4#
- 1...Bf5
- 2.Qc4#
- 2.Qxf5#
- 1...Sf6
- 2.Qc4#
- 1...Rc3
- 2.Qf3#
- 1...Rd3
- 2.Qf3#
- 2.cxd3#
- 1...Ra4
- 2.Qf3#
- 1...Re6
- 2.Qf3#
- 2.Qf5#
- 1...Bg4
- 2.Qc4#
- 1...Be6
- 2.Qf3#
- 1...Sg1
- 2.Qc4#
- 1...Sf4
- 2.Qc4#
- 1...S3g5
- 2.Qc4#
- 1...S7g5
- 2.Qc4#
- 1...Rxf7!
- threat
- 1.Se6?
- threat
- 2.Rxe5#
- 2.Qf5#
- 1...Rxe6
- 2.Qf5#
- 1...Rxf7
- 2.Rxe5#
- 1...Bxe6
- 2.Rxe5#
- 1...cxd6
- 2.Qf5#
- 1...Rf3
- 2.Rxe5#
- 2.Qxf3#
- 2.gxf3#
- 1...Bg3
- 2.Sc5#
- 2.Qf5#
- 1...Bd4
- 2.Qf5#
- 1...S3g5
- 2.Sxf2#
- 1...Sf6
- 2.Sxf6#
- 2.Rxe5#
- 1...S7g5!
- threat
- 1.Be3?
- threat
- 2.Qc4#
- 2.Qf3#
- 1...Rxe3
- 2.Qc4#
- 1...Rxf7
- 2.Rxe5#
- 1...Bxe3
- 2.Qf3#
- 1...cxb5
- 2.Bd5#
- 2.Qd5#
- 2.Qf3#
- 1...Rc3
- 2.Qf3#
- 1...Rd3
- 2.Qf3#
- 2.cxd3#
- 1...Ra4
- 2.Qf3#
- 1...Re6
- 2.Qf3#
- 2.Qf5#
- 1...Bf5
- 2.Qc4#
- 2.Qxf5#
- 1...Be6
- 2.Rxe5#
- 2.Qf3#
- 1...Sg1
- 2.Qc4#
- 1...Sf4
- 2.Qc4#
- 1...S3g5
- 2.Qc4#
- 1...S7g5
- 2.Qc4#
- 1...Sf6
- 2.Qc4#
- 1...Bxg4!
- threat
- 1.Bd5+?
- 1...cxd5
- 2.Qxd5#
- 1...Kd4!
- 1...cxd5
- 1.Be6?
- threat
- 2.Rxe5#
- 2.Qf5#
- 1...Rxe6
- 2.Qf5#
- 1...Rxf7
- 2.Rxe5#
- 1...Bxe6
- 2.Rxe5#
- 1...Rf3
- 2.Rxe5#
- 2.Qxf3#
- 2.gxf3#
- 1...Bg3
- 2.Qf5#
- 1...Bd4
- 2.Qf5#
- 1...S3g5
- 2.Sxf2#
- 2.Qf5#
- 1...S7g5
- 2.Sf6#
- 2.Qf5#
- 1...Sf6
- 2.Sxf6#
- 2.Rxe5#
- 1...cxd6!
- threat
- 1.Rxd7?
- threat
- 2.Qf5#
- 1...Rxf7
- 2.Rxe5#
- 1...Rf3
- 2.Qxf3#
- 2.gxf3#
- 1...Sf6
- 2.Sxf6#
- 1...Rxd7!
- threat
- 1.Qf4+?
- 1...Sxf4
- 2.Sxf2#
- 1...exf4!
- 1...Sxf4
- 1.c3?
- threat
- 2.Bb1#
- 2.Qf3#
- 1...Rxa2
- 2.Qf3#
- 1...Rxf7
- 2.Bb1#
- 2.Rxe5#
- 1...Bxg4
- 2.Bb1#
- 1...Rb3
- 2.Qf3#
- 1...Bf5
- 2.Bb1#
- 2.Qxf5#
- 1...Sg1
- 2.Sxf2#
- 2.Bb1#
- 1...Sf4
- 2.Sxf2#
- 1...S3g5
- 2.Sxf2#
- 2.Bb1#
- 1...S7g5
- 2.Sf6#
- 2.Bb1#
- 1...Sf6
- 2.Sxf6#
- 2.Bb1#
- 1...Rxc3!
- threat
- 1.Se3?
- Keys
- 1.bxc6!
- threat
- 2.Qd5#
- 1...Rxf7
- 2.Rxe5#
- 1...Bxc6
- 2.Qf5#
- 1...Rd3
- 2.cxd3#
- 1...Re3
- 2.Qc4#
- 1...Ra5
- 2.Qf3#
- 1...Re6
- 2.Qf5#
- 1...Be3
- 2.Qf3#
- 1...Be6
- 2.Rxe5#
- 1...Sf4
- 2.Sxf2#
- 1...Sf6
- 2.Sxf6#
- threat
- 1.bxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- R(b);N_GUARD,XB(C)::QAB1(L)
- R(b);OGATE::P(D),XR(b)
- R(b);S_CUTB(a)::QAR2(L)
- R(b);N_GUARD::QAB1(L)
- R(i);S_CUTB(h)::QAB1(L)
- R(i);N_GUARD,XQ(L)::R1(I),XP(e)
- B(a);N_GUARD::QAR2(L)
- B(a);S_CUTR(b)::QAB1(L)
- B(a);N_GUARD,XP(G)::QAR2(L)
- B(h);N_GUARD::QAB1(L),XB(h)
- B(h);S_CUTR(i)::R1(I),XP(e)
- B(h);N_GUARD::QAB1(L)
- S(c);N_GUARD::S(F),XB(a)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(f);N_GUARD,XP(H)::QAB1(L)
- P(f);N_GUARD::QAB1(L)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(b);XS(F)::QAR2(L)
- B(a);XS(F)::QAB1(L)
- P(f);XP(H)::QAB1(L)
- P(g);XR(J)::QAR2(L)
- S(j);::QAR2(L)
- R(b);::QAB1(L)
- B(h);::QAR2(L)
- B(h);::QAB1(L)
- S(c);::QAR2(L)
- S(c);SBLOCK::QAR2(L)
- Refutation
- R(i);XQ(L)
- Try
- S(M);
- Threat
- DUALS(2)
- Vars
- R(i);XS(M)::QAB1(L)
- R(i);XQ(L)::R1(I),XP(e)
- B(h);XS(M)::R1(I),XP(e)
- P(g);XR(J)::QAB1(L)
- B(a);::QAB1(L)
- S(c);N_GUARD::S(F),XB(a)
- Refutation
- S(j);
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(b);XB(A)::QAR2(L)
- R(i);N_GUARD,XQ(L)::R1(I),XP(e)
- B(a);XB(A)::QAB1(L)
- R(b);::QAB1(L)
- S(c);::QAR2(L)
- S(j);::QAR2(L)
- Refutation
- B(h);XS(F)
- Try
- B(C);CHECK
- Vars
- P(f);OGATE,XB(C)::QAB1(L),XP(f)
- Refutation
- K(d);P-FLIGHT
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(i);XB(C)::QAB1(L)
- R(i);XQ(L)::R1(I),XP(e)
- B(h);XB(C)::R1(I),XP(e)
- B(a);::QAB1(L)
- Refutation
- P(g);XR(J)
- Try
- R(J);XB(h)
- Threat
- QAB1(L)
- Vars
- R(i);N_GUARD,XQ(L)::R1(I),XP(e)
- S(j);N_GUARD::S(F),XS(j)
- Refutation
- R(i);XR(J)
- Try
- Q(L);CHECK
- Vars
- S(c);XQ(L)::S(F),XB(a)
- Refutation
- P(e);XQ(L)
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- R(b);XB(C)::QAB1(L)
- B(h);XS(F)::B(C)
- R(b);::QAB1(L)
- S(c);N_GUARD::S(F),XB(a)
- Refutation
- R(b);XP(D)
- Try
- Actual
- P(H);XP(f)
- Threat
- QAB1(L)
- Vars
- R(i);N_GUARD,XQ(L)::R1(I),XP(e)
- B(h);N_GUARD,XP(H)::QAB1(L)
- R(b);OGATE::P(D),XR(b)
- R(b);S_CUTB(a)::QAR2(L)
- R(b);N_GUARD::QAB1(L)
- R(i);S_CUTB(h)::QAB1(L)
- B(a);S_CUTR(b)::QAB1(L)
- B(h);S_CUTR(i)::R1(I),XP(e)
- S(c);N_GUARD::S(F),XB(a)
- S(j);N_GUARD::S(F),XS(j)
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