MESON Chess Problem Database

Problem Display
PID: 230646 (8/6QK/p2Pp3/N3PP1N/R2pk3/B7/3PP1P1/8 w - - 0 1)

Gomez, Luis

Problemas, 2021

8/6QK/p2Pp3/N3PP1N/R2pk3/B7/3PP1P1/8

#2

12 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • 1...Kd5
        • 2.Qb7#
      • 1...Kxf5
        • 2.Qg6#
      • 1...exf5
        • 2.Qb7#
      • 1...d3
        • 2.Se3#
      • 1...a5!
    • 1.Sg3+?
      • 1...Kf4
        • 2.Rxd4#
        • 2.e3#
      • 1...Kd5!
    • 1.Rxd4+?
      • 1...Kxf5
        • 2.Sg3#
        • 2.Rf4#
        • 2.Qf6#
        • 2.e4#
        • 2.g4#
      • 1...Kxd4!
    • 1.Qg4+?
      • 1...Kd5
        • 2.Qxd4#
      • 1...Kxe5!
    • 1.d3+?
      • 1...Kd5
        • 2.Sf4#
      • 1...Kxf5
        • 2.g4#
      • 1...Ke3!
    • 1.e3?
      • 1...Kd5
        • 2.Rxd4#
      • 1...Kxf5
        • 2.Sg3#
      • 1...exf5
        • 2.Rxd4#
      • 1...Kd3!
  • Keys
    • 1.Qg3!
      • 1...Kd5
        • 2.Sf6#
      • 1...Kxf5
        • 2.Qf4#
      • 1...exf5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(K)
        • K(b);OGATEB,S_FLIGHT,XP(H)::QAB1(K)
        • P(d);SBLOCK,XP(H)::QAB(K)
        • P(a);::R(E)+S(F)
      • Refutation
        • P(c);
    • Try
      • S(I);CHECK
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • R(E);CHECK,XP(a)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
    • Try
      • Q(K);CHECK
      • Vars
        • K(b);N_SPINP(a),OGATE,S_FLIGHT::QAR1(K),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(G)
    • Try
      • P(A);CHECK
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::S(I)
        • K(b);N_SPINP(a),S_FLIGHT,XP(H)::P(C)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • P(B);
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::R1(E),XP(a)
        • K(b);N_SPINP(a),S_FLIGHT,XP(H)::S(I)
        • P(d);SBLOCK,XP(H)::R1(E),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
  • Actual
    • Q(K);
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT::S(I)
      • K(b);N_SPINP(a),S_FLIGHT,XP(H)::QAR1(K)
      • P(d);SBLOCK,XP(H)::S(I)
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