MESON Chess Problem Database

Problem Display
PID: 268764 (8/5K2/3p4/N1PkP1p1/8/5P2/3N4/6Q1 w - - 0 1)

Gomez, Luis

Problemas, 2020

8/5K2/3p4/N1PkP1p1/8/5P2/3N4/6Q1

#2

7 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sdc4?
      • 1...dxc5
        • 2.Qd1#
      • 1...dxe5
        • 2.Sb6#
      • 1...g4!
    • 1.Qg4?
      • 1...Kxe5
        • 2.Qe4#
      • 1...dxc5
        • 2.Qe4#
      • 1...dxe5
        • 2.Qc4#
      • 1...Kxc5!
  • Keys
    • 1.Sdb3!
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qxg5#
      • 1...dxc5
        • 2.Qxc5#
      • 1...dxe5
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • P(c);SBLOCK,XP(E)::QAR(A)
        • P(c);SBLOCK,XP(F)::S(B)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XP(F)::QAR1(A)
        • P(c);SBLOCK,XP(E)::QAB1(A)
        • P(c);SBLOCK,XP(F)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
  • Actual
    • S(B);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(F)::QAR2(A),XP(b)
      • P(c);OGATE,XP(E)::QAR1(A),XP(c)
      • P(c);SBLOCK,XP(F)::QAR(A)
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