MESON Chess Problem Database

Problem Display
PID: 123422 (3RB3/npP1kNP1/1Qp1n1p1/2P3P1/K2N3B/4P3/8/4R3 w - - 0 1)

Mintz, Jakob

Canadian Chess Chat, 1981

3RB3/npP1kNP1/1Qp1n1p1/2P3P1/K2N3B/4P3/8/4R3

#2

13 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.exd4#
    • 1...Sf4
      • 2.exf4#
    • 1...Sxc5+
      • 2.Qxc5#
    • 1...Sxg5
      • 2.Bxg5#
    • 1...Sxc7
      • 2.Qxc7#
    • 1...Sxd8
      • 2.cxd8Q#
    • 1...Sf8
      • 2.g8S#
    • 1...Sb5
      • 2.c8S#
  • Tries
    • 1.Sxc6+?
      • 1...Sxc6
        • 2.c8S#
      • 1...bxc6!
    • 1.Sh6?
      • threat
        • 2.Sg8#
      • 1...Sxc5+
        • 2.Qxc5#
      • 1...Sxd4
        • 2.exd4#
      • 1...Sxc7
        • 2.Qxc7#
      • 1...Sxd8
        • 2.cxd8Q#
      • 1...Sxg7!
    • 1.g8Q?
      • threat
        • 2.Rd7#
      • 1...Sxc5+
        • 2.Qxc5#
      • 1...Sxd4
        • 2.exd4#
      • 1...Sxg5
        • 2.Bxg5#
      • 1...Sxd8
        • 2.cxd8Q#
        • 2.cxd8B#
      • 1...Sf8!
    • 1.g8R?
      • threat
        • 2.Rd7#
      • 1...Sxc5+
        • 2.Qxc5#
      • 1...Sxd4
        • 2.exd4#
      • 1...Sxg5
        • 2.Bxg5#
      • 1...Sxd8
        • 2.cxd8Q#
        • 2.cxd8B#
      • 1...Sf8!
  • Keys
    • 1.Sh8!
      • threat
        • 2.Sxg6#
      • 1...Sxc5+
        • 2.Qxc5#
      • 1...Sxd4
        • 2.exd4#
      • 1...Sxg5
        • 2.Bxg5#
      • 1...Sxc7
        • 2.Qxc7#
      • 1...Sxd8
        • 2.cxd8Q#
      • 1...Sf4
        • 2.exf4#
      • 1...Sf8
        • 2.g8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(b);OGATE,XS(D)::R(A)+P(B),XS(b)
    • S(b);OGATE::R(A)+P(B),XS(b)
    • S(b);CHECK,OGATE,XP(F)::QAB(H),XS(b)
    • S(b);OGATE,P_SPINS(b),XP(G)::B(E),XS(b)
    • S(b);OGATE,XP(I)::QAR2(H),XS(b)
    • S(b);OGATE,XR(L)::PXS(b)=Q
    • S(b);SBLOCK::P=S
    • S(d);N_GUARD::P=S
  • Tries
    • Try
      • S(D);CHECK,XP(a)
      • Vars
        • S(d);N_GUARD,S_CUTP(e),XS(D)::P=S
      • Refutation
        • P(e);XS(D)
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • S(b);CHECK,OGATE,XP(F)::QAB(H),XS(b)
        • S(b);OGATE,XS(D)::R(A)+P(B),XS(b)
        • S(b);OGATE,XP(I)::QAR2(H),XS(b)
        • S(b);OGATE,XR(L)::PXS(b)=Q
      • Refutation
        • S(b);XP(K)
    • Try
      • P(K);
      • Threat
        • R1(L)
      • Vars
        • S(b);CHECK,OGATE,XP(F)::QAB(H),XS(b)
        • S(b);OGATE,XS(D)::R(A)+P(B),XS(b)
        • S(b);OGATE,P_SPINS(b),XP(G)::B(E),XS(b)
        • S(b);OGATE,XR(L)::PXS(b)=Q
      • Refutation
        • S(b);
    • Try
      • P(K);
      • Threat
        • R1(L)
      • Vars
        • S(b);CHECK,OGATE,XP(F)::QAB(H),XS(b)
        • S(b);OGATE,XS(D)::R(A)+P(B),XS(b)
        • S(b);OGATE,P_SPINS(b),XP(G)::B(E),XS(b)
        • S(b);OGATE,XR(L)::PXS(b)=Q
      • Refutation
        • S(b);
  • Actual
    • S(J);
    • Threat
      • S(J),XP(c)
    • Vars
      • S(b);CHECK,OGATE,XP(F)::QAB(H),XS(b)
      • S(b);OGATE,XS(D)::R(A)+P(B),XS(b)
      • S(b);OGATE,P_SPINS(b),XP(G)::B(E),XS(b)
      • S(b);OGATE,XP(I)::QAR2(H),XS(b)
      • S(b);OGATE,XR(L)::PXS(b)=Q
      • S(b);OGATE::R(A)+P(B),XS(b)
      • S(b);SBLOCK::P=S
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