MESON Chess Problem Database

Problem Display
PID: 136488 (5BK1/5RpN/4k3/1R6/1PnPr3/p3b1pb/1p1pp1q1/1Q6 w - - 0 1)

Subrahmanyam, Swaminatha

Comm., BCF 104. Ty., 1963-1964

5BK1/5RpN/4k3/1R6/1PnPr3/p3b1pb/1p1pp1q1/1Q6

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Qg6#
    • 1...Rf4
      • 2.Sg5#
    • 1...Rg4
      • 2.Qf5#
    • 1...Rh4
      • 2.Qg6#
    • 1...Re5
      • 2.Qg6#
    • 1...Bg1
      • 2.Sg5#
    • 1...Bf2
      • 2.Sg5#
    • 1...Bxd4
      • 2.Sg5#
    • 1...Bg5
      • 2.Sxg5#
    • 1...Se5
      • 2.d5#
    • 1...Sd6
      • 2.Re7#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Qxc4#
      • 1...Rf4
        • 2.Sg5#
        • 2.Re5#
      • 1...Rg4
        • 2.Re5#
      • 1...Rh4
        • 2.Re5#
      • 1...Re5
        • 2.Rxe5#
      • 1...Rxd4!
    • 1.Qxe4+?
      • 1...Se5
        • 2.Rxe5#
        • 2.Rb6#
        • 2.Qxe5#
        • 2.d5#
      • 1...Qxe4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxc4#
      • 1...Rxd4
        • 2.Qg6#
      • 1...Rf4
        • 2.Sg5#
      • 1...Rg4
        • 2.Qf5#
      • 1...Rh4
        • 2.Qg6#
      • 1...Re5
        • 2.Qg6#
      • 1...Sa5
        • 2.Qc8#
      • 1...Se5
        • 2.d5#
      • 1...Sb6
        • 2.Qc6#
      • 1...Sd6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(j);OGATE,XP(C)::QAR2(A)
    • R(j);S_CUTB(f)::S(F)
    • R(j);OGATE::QAB1(A)
    • R(j);OGATE::QAR2(A)
    • B(f);N_GUARD::S(F)
    • B(f);N_GUARD,XP(C)::S(F)
    • B(f);N_GUARD::S(F),XB(f)
    • S(i);SBLOCK::P(C)
    • S(i);SBLOCK::R1(E)
  • Tries
    • Try
      • Q(A);P_PINS(i)
      • Threat
        • QAB(A),XS(i)
      • Vars
        • R(j);N_GUARD::R1(D)
        • R(j);N_GUARD::R1(D),XR(j)
      • Refutation
        • R(j);XP(C)
    • Try
      • Q(A);CHECK,XR(j)
      • Refutation
        • Q(d);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A),XS(i)
    • Vars
      • R(j);OGATE,XP(C)::QAR2(A)
      • R(j);S_CUTB(f)::S(F)
      • R(j);OGATE::QAB1(A)
      • R(j);OGATE::QAR2(A)
      • S(i);OGATE::QAB(A)
      • S(i);SBLOCK::P(C)
      • S(i);OGATE::QAR2(A)
      • S(i);SBLOCK::R1(E)
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