MESON Chess Problem Database

Problem Display
PID: 134420 (n1R5/1Pq3B1/KP1P1N2/3PN3/4PP1p/2k3rR/Q1Bp4/3r4 w - - 0 1)

Taraba, Jozef

Pravda, 1988

n1R5/1Pq3B1/KP1P1N2/3PN3/4PP1p/2k3rR/Q1Bp4/3r4

#2

14 + 7

14580 Chess Compositions (Taraba) 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qa5#
    • 1...Qc4+
      • 2.Rxc4#
  • Tries
    • 1.Sfd7?
      • threat
        • 2.Sc6#
      • 1...Qc4+
        • 2.Rxc4#
      • 1...Kb4
        • 2.Qa5#
      • 1...Kd4
        • 2.Sg4#
      • 1...Qc6
        • 2.Sxc6#
      • 1...Qc5!
  • Keys
    • 1.Sfg4!
      • threat
        • 2.Sd3#
      • 1...Qc4+
        • 2.Rxc4#
      • 1...Kb4
        • 2.Qa5#
      • 1...Kd4
        • 2.Sd7#
      • 1...Rd3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINQ(f),N_SPINR(d),S_FLIGHT::QAB1(A)
    • Q(f);CHECK,OGATE::R1(N),XQ(f)
  • Tries
    • Try
      • S(K);
      • Threat
        • B(M)+S(G)
      • Vars
        • Q(f);CHECK,OGATE::R1(N),XQ(f)
        • K(c);N_SPINQ(f),N_SPINR(d),S_FLIGHT::QAB1(A)
        • K(c);N_SPINQ(f),N_SPINR(d),S_FLIGHT::B(M)+S(G)
        • Q(f);P_PINP(I)::B(M)+S(G),XQ(f)
      • Refutation
        • Q(f);
  • Actual
    • S(K);
    • Threat
      • B(M)+S(G)
    • Vars
      • Q(f);CHECK,OGATE::R1(N),XQ(f)
      • K(c);N_SPINQ(f),N_SPINR(d),S_FLIGHT::QAB1(A)
      • K(c);N_SPINQ(f),N_SPINR(d),S_FLIGHT::B(M)+S(G)
      • R(d);::B(M)+S(G),XR(d)
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