MESON Chess Problem Database

Problem Display
PID: 140787 (8/QKpRp3/1n2R3/2qPN3/p2k1p2/N4B2/1r1PP3/B7 w - - 0 1)

Salamanca, Tomas

Good Companions (October), 1923

8/QKpRp3/1n2R3/2qPN3/p2k1p2/N4B2/1r1PP3/B7

#2

11 + 8

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5+
      • 2.Rxd5#
    • 1...Sc4+
      • 2.Sb5#
    • 1...Sxd5+
      • 2.Sb5#
      • 2.Bxb2#
    • 1...Sxd7+
      • 2.Sb5#
      • 2.Bxb2#
    • 1...Sa8+
      • 2.Sb5#
      • 2.Bxb2#
    • 1...Sc8+
      • 2.Sb5#
      • 2.Bxb2#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Re4#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Qc6+
        • 2.dxc6#
      • 1...Sc4+
        • 2.Sb5#
      • 1...Sxd5+
        • 2.Bxb2#
      • 1...Sxd7+
        • 2.Bxb2#
      • 1...Sa8+
        • 2.Bxb2#
      • 1...Sc8+
        • 2.Bxb2#
      • 1...Qd6
        • 2.Bxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(e);CHECK,OGATE,P_SPINQ(e),P_SPINS(f),XP(F)::R1(K),XQ(e)
    • S(f);CHECK,P_SPINQ(e)::S(D)
  • Actual
    • S(G);
    • Threat
      • R1(H)
    • Vars
      • Q(e);CHECK,OGATE,P_SPINQ(e),P_SPINS(f),XP(F)::R1(K),XQ(e)
      • Q(e);CHECK,OGATE,P_SPINS(f)::R(K)+P(F),XQ(e)
      • S(f);CHECK,P_SPINQ(e),SBLOCK::S(D)
      • S(f);CHECK,P_SPINQ(e),P_SPINS(f),XP(F)::B(A),XR(a)
      • S(f);CHECK,P_SPINQ(e),XR(K)::B(A),XR(a)
      • S(f);CHECK,P_SPINQ(e)::B(A),XR(a)
      • Q(e);N_GUARD,P_SPINS(f)::B(A),XR(a)
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