MESON Chess Problem Database
Problem Display
PID: 107931 (8/2p1N3/2B5/1NR2Q2/4ppP1/3PkP2/3n1r2/3K2B1 w - - 0 1)
Coutinho, Jose Ernesto
Canadian Chess Chat, 1982
#2
10 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kxd3
- 2.Rc3#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sxf3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...exf3
- 2.Sd5#
- 1...Kxd3
- Tries
- 1.Sd5+?
- 1...Kxd3
- 2.Rc3#
- 1...Kxf3!
- 1...Kxd3
- 1.Bxe4?
- threat
- 2.Sd5#
- 1...Sxe4
- 2.Qxe4#
- 1...c6!
- threat
- 1.Rc1?
- 1...Kxd3
- 2.Rc3#
- 1...Sxf3
- 2.Qxe4#
- 1...exd3
- 2.Qc5#
- 1...exf3
- 2.Sd5#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxf3!
- 1...Kxd3
- 1.Rc2?
- 1...Kxd3
- 2.Rc3#
- 1...Sxf3
- 2.Qxe4#
- 1...exd3
- 2.Qc5#
- 1...exf3
- 2.Sd5#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxf3!
- 1...Kxd3
- 1.Rc3?
- threat
- 2.dxe4#
- 2.d4#
- 1...exd3
- 2.Rxd3#
- 2.Qxd3#
- 2.Qc5#
- 1...exf3
- 2.Sd5#
- 2.Qc5#
- 2.d4#
- 1...Sb1
- 2.Qxe4#
- 1...Kxf3!
- threat
- 1.Rc4?
- 1...Kxd3
- 2.Rc3#
- 1...Sxf3
- 2.Qxe4#
- 1...Sxc4
- 2.Qxe4#
- 1...exd3
- 2.Qxf4#
- 2.Qc5#
- 1...exf3
- 2.Sd5#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Kxf3!
- 1...Kxd3
- 1.Qe6?
- 1...Kxd3
- 2.Rc3#
- 1...Sxf3
- 2.Qxe4#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxf3!
- 1...Kxd3
- 1.Qg6?
- 1...Kxd3
- 2.Rc3#
- 1...Sxf3
- 2.Qxe4#
- 1...exd3
- 2.Sf5#
- 1...exf3
- 2.Sd5#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxf3!
- 1...Kxd3
- 1.Qxf4+?
- 1...Kxd3
- 2.Rc3#
- 1...Kxf4!
- 1...Kxd3
- 1.Qd5?
- 1...Sxf3
- 2.Sf5#
- 2.Qxe4#
- 1...exd3
- 2.Sf5#
- 2.Qd4#
- 1...exf3
- 2.Sf5#
- 2.Qd4#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxf3!
- 1...Sxf3
- 1.Qe5?
- 1...Kxd3
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 1...Sxf3
- 2.Qxe4#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxf3!
- 1...Kxd3
- 1.d4?
- threat
- 2.Rc3#
- 1...Kd3
- 2.Rc3#
- 1...Sb1
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxf3!
- threat
- 1.g5?
- 1...Kxd3
- 2.Rc3#
- 1...Kxf3
- 2.Qh3#
- 1...Sxf3
- 2.Qxe4#
- 1...exf3
- 2.Sd5#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...exd3!
- 1...Kxd3
- 1.Sd5+?
- Keys
- 1.Qh7!
- 1...Kxd3
- 2.Rc3#
- 1...Kxf3
- 2.Qh3#
- 1...Sxf3
- 2.Qxe4#
- 1...exd3
- 2.Sf5#
- 1...exf3
- 2.Sd5#
- 1...Sb1
- 2.Qxe4#
- 1...Sf1
- 2.Qxe4#
- 1...Sb3
- 2.Qxe4#
- 1...Sc4
- 2.Qxe4#
- 1...Kxd3
- 1.Qh7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- S(a);N_GUARD::QAR1(H),XP(d)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- P(d);SBLOCK,XP(D)::S(J)
- Tries
- Try
- S(J);CHECK
- Vars
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(e),XP(D)
- Try
- B(I);XP(d)
- Threat
- S(J)
- Vars
- S(a);OGATE,XB(I)::QAR1(H),XS(a)
- Refutation
- P(f);
- Try
- R(G);
- Vars
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- P(d);SBLOCK,XP(C)::QAB(H)
- P(d);SBLOCK,XP(D)::S(J)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(D)
- Try
- R(G);
- Vars
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- P(d);SBLOCK,XP(C)::QAB(H)
- P(d);SBLOCK,XP(D)::S(J)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(D)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(D)
- Try
- R(G);
- Vars
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- S(a);N_GUARD,XR(G)::QAR1(H),XP(d)
- P(d);SBLOCK,XP(D)::S(J)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(D)
- Try
- Q(H);P_PINP(d)
- Vars
- K(c);N_SPINP(d),N_SPINR(b),OGATEB,P-FLIGHT,XP(C)::R1(G)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,XP(D)
- Try
- Q(H);
- Vars
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- P(d);SBLOCK,XP(C)::S(J)
- P(d);SBLOCK,XP(D)::S(J)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(D)
- Try
- Q(H);CHECK,XP(e)
- Vars
- K(c);N_SPINR(b),P-FLIGHT,XP(C)::R1(G)
- Refutation
- K(c);N_SPINR(b),S_FLIGHT,XQ(H)
- Try
- Q(H);
- Vars
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(D)
- Try
- Q(H);P_PINP(d)
- Vars
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,XP(D)
- Try
- P(C);
- Threat
- R(G)
- Vars
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d)::R1(G)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- K(c);N_SPINR(b),P-FLIGHT,P_SPINP(d),XP(D)
- Try
- P(E);
- Vars
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(D)::QAR2(H)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- P(d);SBLOCK,XP(D)::S(J)
- S(a);N_GUARD::QAR1(H),XP(d)
- Refutation
- P(d);XP(C)
- Try
- Actual
- Q(H);
- Vars
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R1(G)
- K(c);N_SPINR(b),OGATEB,P-FLIGHT,P_SPINP(d),XP(D)::QAR2(H)
- S(a);N_GUARD,XP(D)::QAR1(H),XP(d)
- P(d);SBLOCK,XP(C)::S(J)
- P(d);SBLOCK,XP(D)::S(J)
- S(a);N_GUARD::QAR1(H),XP(d)
Developed and maintained by Brian Stephenson.
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