MESON Chess Problem Database
Problem Display
PID: 91385 (4Rn2/2p1pKP1/3p4/nB1k4/NP1B1RN1/1P1P3r/r3P2p/3Qb2b w - - 0 1)
den Toom, Cornelis
Probleemblad, 1987
#2
13 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd2
- 2.Sc3#
- 1...Re3
- 2.Sxe3#
- 1...Rh4
- 2.Se3#
- 1...Rh5
- 2.Se3#
- 1...Rh6
- 2.Se3#
- 1...Rh7
- 2.Se3#
- 1...Rh8
- 2.Se3#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Bg3
- 2.Sc3#
- 2.Se3#
- 2.Qxh1#
- 1...Bh4
- 2.Sc3#
- 1...Bf3
- 2.Se3#
- 1...Be4
- 2.dxe4#
- 1...Sxb3
- 2.Qxb3#
- 1...Sc4
- 2.bxc4#
- 2.dxc4#
- 1...Sc6
- 2.Bc4#
- 1...c5
- 2.Sb6#
- 1...c6
- 2.Sb6#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Rd2
- Tries
- 1.Bb2?
- threat
- 2.Rd4#
- 1...Rxd3
- 2.Se3#
- 2.Qxd3#
- 1...Sxb3
- 2.Qxb3#
- 1...Rf3
- 2.e4#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Be4
- 2.dxe4#
- 1...Sc6
- 2.Bc4#
- 1...Se6
- 2.Rf5#
- 1...c5
- 2.Sb6#
- 1...e5
- 2.Sf6#
- 1...Rxb2!
- threat
- 1.Bf2?
- threat
- 2.Rd4#
- 1...Rxd3
- 2.Qxd3#
- 1...Bxf2
- 2.Sc3#
- 1...Sxb3
- 2.Qxb3#
- 1...Rf3
- 2.e4#
- 1...Bc3
- 2.Sxc3#
- 1...Be4
- 2.dxe4#
- 1...Sc6
- 2.Bc4#
- 1...Se6
- 2.Rf5#
- 1...c5
- 2.Sb6#
- 1...e5
- 2.Sf6#
- 1...Re3!
- threat
- 1.Bc3?
- threat
- 2.Rd4#
- 1...Rxd3
- 2.Se3#
- 2.Qxd3#
- 1...Bxc3
- 2.Sxc3#
- 1...Sxb3
- 2.Qxb3#
- 1...Rf3
- 2.e4#
- 1...Be4
- 2.dxe4#
- 1...Sc6
- 2.Bc4#
- 1...Se6
- 2.Rf5#
- 1...c5
- 2.Sb6#
- 1...e5
- 2.Sf6#
- 1...Bf2!
- threat
- 1.Bc5?
- threat
- 2.Rd4#
- 1...Rxd3
- 2.Qxd3#
- 1...Sxb3
- 2.Qxb3#
- 1...Rf3
- 2.e4#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Be4
- 2.dxe4#
- 1...Sc6
- 2.Bc4#
- 1...Se6
- 2.Rf5#
- 1...e5
- 2.Sf6#
- 1...dxc5!
- threat
- 1.Bb6?
- threat
- 2.Rd4#
- 1...Rxd3
- 2.Qxd3#
- 1...Sxb3
- 2.Qxb3#
- 1...cxb6
- 2.Sxb6#
- 1...Rf3
- 2.e4#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Be4
- 2.dxe4#
- 1...Sc6
- 2.Bc4#
- 1...Se6
- 2.Rf5#
- 1...e5
- 2.Sf6#
- 1...c5!
- threat
- 1.Bf6?
- threat
- 2.Rd4#
- 1...Rxd3
- 2.Se3#
- 2.Qxd3#
- 1...Sxb3
- 2.Qxb3#
- 1...exf6
- 2.Sxf6#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Be4
- 2.dxe4#
- 1...Sc6
- 2.Bc4#
- 1...Se6
- 2.Rf5#
- 1...c5
- 2.Sb6#
- 1...e5!
- threat
- 1.e4+?
- 1...Bxe4
- 2.dxe4#
- 1...Kxd4!
- 1...Bxe4
- 1.Bb2?
- Keys
- 1.Ba7!
- threat
- 2.Rd4#
- 1...Rxd3
- 2.Qxd3#
- 1...Sxb3
- 2.Qxb3#
- 1...Rf3
- 2.e4#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Be4
- 2.dxe4#
- 1...Sc6
- 2.Bc4#
- 1...Se6
- 2.Rf5#
- 1...c5
- 2.Sb6#
- 1...e5
- 2.Sf6#
- threat
- 1.Ba7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(c);S_CUTB(a)::S(E)
- R(e);N_GUARD::S(I),XR(e)
- R(e);N_GUARD::S(I)
- R(e);N_GUARD,P_PINP(L)::S(I)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(b);S_CUTR(e)::S(I)
- B(b);OGATE::P(D),XB(b)
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- S(f);N_GUARD,SBLOCK::B(J)
- P(i);N_GUARD::S(E)
- P(j);N_GUARD::S(I)
- Tries
- Try
- B(G);
- Threat
- R1(H)
- Vars
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- R(e);P_PINR(H),S_CUTB(b)::P(B)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(b);OGATE::QAR(A)+P(D)DCHECK,XB(b)
- S(f);N_GUARD,SBLOCK::B(J)
- S(k);S_CUTP(j)::R(H)
- P(i);N_GUARD::S(E)
- P(j);N_GUARD::S(I)
- Refutation
- R(c);XB(G)
- Try
- B(G);
- Threat
- R1(H)
- Vars
- R(e);OGATE,P_SPINR(e),XP(D)::QAR2(A),XR(e)
- B(a);N_GUARD,XB(G)::S(E)
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- R(e);P_PINR(H),S_CUTB(b)::P(B)
- B(a);N_GUARD::S(E),XB(a)
- B(b);OGATE::QAR(A)+P(D)DCHECK,XB(b)
- S(f);N_GUARD,SBLOCK::B(J)
- S(k);S_CUTP(j)::R(H)
- P(i);N_GUARD::S(E)
- P(j);N_GUARD::S(I)
- Refutation
- R(e);
- Try
- B(G);
- Threat
- R1(H)
- Vars
- B(a);XB(G)::S(E),XB(a)
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- R(e);P_PINR(H),S_CUTB(b)::P(B)
- B(b);OGATE::QAR(A)+P(D)DCHECK,XB(b)
- S(f);N_GUARD,SBLOCK::B(J)
- S(k);S_CUTP(j)::R(H)
- P(i);N_GUARD::S(E)
- P(j);N_GUARD::S(I)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- R1(H)
- Vars
- R(e);OGATE,P_SPINR(e),XP(D)::QAR2(A),XR(e)
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- R(e);P_PINR(H),S_CUTB(b)::P(B)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(b);OGATE::QAR(A)+P(D)DCHECK,XB(b)
- S(f);N_GUARD,SBLOCK::B(J)
- S(k);S_CUTP(j)::R(H)
- P(j);N_GUARD::S(I)
- Refutation
- P(h);XB(G)
- Try
- B(G);
- Threat
- R1(H)
- Vars
- R(e);OGATE,P_SPINR(e),XP(D)::QAR2(A),XR(e)
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- P(i);XB(G)::S(E),XP(i)
- R(e);P_PINR(H),S_CUTB(b)::P(B)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(b);OGATE::QAR(A)+P(D)DCHECK,XB(b)
- S(f);N_GUARD,SBLOCK::B(J)
- S(k);S_CUTP(j)::R(H)
- P(j);N_GUARD::S(I)
- Refutation
- P(i);
- Try
- B(G);
- Threat
- R1(H)
- Vars
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- P(j);XB(G)::S(I),XP(j)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(b);OGATE::QAR(A)+P(D)DCHECK,XB(b)
- S(f);N_GUARD,SBLOCK::B(J)
- S(k);S_CUTP(j)::R(H)
- P(i);N_GUARD::S(E)
- Refutation
- P(j);
- Try
- P(B);CHECK
- Vars
- B(b);OGATE,XP(B)::P(D),XB(b)
- Refutation
- K(g);P-FLIGHT,XB(G)
- Try
- Actual
- B(G);
- Threat
- R1(H)
- Vars
- R(e);OGATE,P_SPINR(e),XP(D)::QAR2(A),XR(e)
- S(f);OGATE,XP(C)::QAB(A),XS(f)
- R(e);P_PINR(H),S_CUTB(b)::P(B)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- B(b);OGATE::QAR(A)+P(D)DCHECK,XB(b)
- S(f);N_GUARD,SBLOCK::B(J)
- S(k);S_CUTP(j)::R(H)
- P(i);N_GUARD::S(E)
- P(j);N_GUARD::S(I)
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