MESON Chess Problem Database

Problem Display
PID: 261291 (8/3P4/4BRp1/p2RP3/4kP2/K2N3q/3PPP2/1Q1n3b w - - 0 1)

Cramatte, Jacques

Neue Zurcher Zeitung, 1984

8/3P4/4BRp1/p2RP3/4kP2/K2N3q/3PPP2/1Q1n3b

#2

12 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qg2
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qg4
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qxe6
      • 2.Sb4#
    • 1...Qh2
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qxd3+
      • 2.Qxd3#
    • 1...Qh4
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qh5
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qh6
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qh7
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Qh8
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Bf3
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sc5#
    • 1...Sc3
      • 2.Sc5#
    • 1...Se3
      • 2.Sc5#
    • 1...a4
      • 2.Qb4#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Qb7#
      • 1...Qxd3+
        • 2.Qxd3#
      • 1...Qxe6
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sb4#
        • 2.Sc5#
      • 1...Sc3
        • 2.Sc5#
      • 1...Se3
        • 2.Sc5#
      • 1...Sb2!
    • 1.Qxd1?
      • threat
        • 2.Qa4#
      • 1...Qxd3+
        • 2.exd3#
      • 1...Qxe6
        • 2.Qxh1#
      • 1...a4
        • 2.Qxa4#
      • 1...Qe3!
    • 1.Qb3?
      • threat
        • 2.Sc5#
        • 2.Qa4#
        • 2.Qc4#
      • 1...Qxe6
        • 2.Sc5#
        • 2.Qc4#
      • 1...Qxd3
        • 2.Qxd3#
      • 1...Qf5
        • 2.Qa4#
        • 2.Qc4#
      • 1...Sb2
        • 2.Sc5#
      • 1...Sc3
        • 2.Sc5#
        • 2.Qc4#
      • 1...Se3
        • 2.Sc5#
      • 1...a4
        • 2.Sc5#
        • 2.Qxa4#
        • 2.Qc4#
        • 2.Qb4#
      • 1...Qe3!
    • 1.f3+?
      • 1...Bxf3
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sc5#
      • 1...Qxf3!
    • 1.d8Q?
      • threat
        • 2.Rd4#
      • 1...Qxd3+
        • 2.Qxd3#
      • 1...Qe3!
    • 1.d8R?
      • threat
        • 2.Rd4#
      • 1...Qxd3+
        • 2.Qxd3#
      • 1...Qe3!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Rd6#
      • 1...Qxd3+
        • 2.Rxd3#
      • 1...Qxe6
        • 2.Sc5#
      • 1...Sc3
        • 2.Sc5#
      • 1...Se3
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_PINS(F),XB(J)::QAB(A)+S(F)
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(F)::QAB1(A),XQ(c)
    • S(a);N_PINS(F)::QAB(A)+S(F),DCHECK
    • P(e);N_GUARD::QAR(A)
  • Tries
    • Try
      • R(H);
      • Threat
        • QAB(A)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XS(F)::QAB1(A),XQ(c)
        • S(a);N_PINS(F)::QAB(A)+S(F),DCHECK
      • Refutation
        • S(a);
    • Try
      • Q(A);XS(a)
      • Threat
        • QAR(A)
      • Vars
        • Q(c);CHECK,OGATE,XS(F)::P(C),XQ(c)
        • Q(c);N_GUARD,N_PINS(F),XB(J)::QAB(A),XB(b)
        • P(e);::QAR(A),XP(e)
      • Refutation
        • Q(c);
    • Try
      • Q(A);N_SPINS(F)
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);OGATE,P_PINQ(A),XS(F)::QAB1(A),XQ(c)
        • S(a);::S(F)
      • Refutation
        • Q(c);
    • Try
      • P(D);CHECK,N_SPINS(F)
      • Refutation
        • Q(c);P_PINS(F),XP(D)
    • Try
      • P(L);
      • Threat
        • R1(H)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XS(F)::QAB1(A),XQ(c)
      • Refutation
        • Q(c);
    • Try
      • P(L);
      • Threat
        • R1(H)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XS(F)::QAB1(A),XQ(c)
      • Refutation
        • Q(c);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(H)
    • Vars
      • Q(c);CHECK,OGATE,XS(F)::QAB(A)+R(H),XQ(c)
      • Q(c);N_PINS(F),XB(J)::S(F)
      • S(a);N_PINS(F)::S(F)
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