MESON Chess Problem Database

Problem Display
PID: 258133 (4N3/4p3/2Qpk1K1/4P3/8/8/8/8 w - - 0 1)

Gladtsinova, Vera

Astafyeva-30 JT (Kudesnik), 2021

4N3/4p3/2Qpk1K1/4P3/8/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Sc4#
        • 2.Sf7#
      • 1...exd6
        • 2.Qxd6#
      • 1...Kxe5!
    • 1.Qe4?
      • 1...dxe5
        • 2.Qc6#
      • 1...d5
        • 2.Qf5#
      • 1...Kd7!
    • 1.Qb5?
      • threat
        • 2.Sc7#
        • 2.Sg7#
      • 1...dxe5
        • 2.Qc6#
      • 1...d5!
    • 1.exd6?
      • 1...exd6
        • 2.Qxd6#
      • 1...Ke5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qe4#
      • 1...exf6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,P_SPINP(c),XS(D)::QAR1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XP(A)
    • Try
      • Q(B);N_PINP(a)
      • Vars
        • P(a);OGATEB,P_SPINP(a),SBLOCK,XP(A)::QAR2(B)
        • P(a);SBLOCK::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATEB,SBLOCK,XP(A)::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • P(A);XP(a)
      • Vars
        • P(c);OGATE,P_SPINP(c),XP(A)::QAR1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XP(A)::QAR1(B)
      • P(c);N_GUARD,XS(D)::QAR1(B),XP(a)
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