MESON Chess Problem Database

Problem Display
PID: 272278 (8/3B4/6N1/6pk/7N/8/4K3/7Q w - - 0 1)

Petrasinovic, Petrasin

1/2 Prize, Garcia(Mario)-75 JT, 2023

8/3B4/6N1/6pk/7N/8/4K3/7Q

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5+?
      • 1...Kg4
        • 2.Qf3#
      • 1...Kxg6!
    • 1.Sf4+?
      • 1...Kh6
        • 2.Sf5#
      • 1...gxf4!
    • 1.Se5?
      • threat
        • 2.Sg2#
        • 2.Shf3#
        • 2.Sf5#
        • 2.Shg6#
      • 1...Kh6
        • 2.Sf5#
      • 1...g4
        • 2.Shf3#
      • 1...gxh4!
    • 1.Se7?
      • threat
        • 2.Sg2#
        • 2.Sf3#
        • 2.Shg6#
      • 1...Kh6
        • 2.Shf5#
      • 1...g4
        • 2.Sf3#
      • 1...gxh4!
    • 1.Sf8?
      • threat
        • 2.Sg2#
        • 2.Sf3#
        • 2.Shg6#
      • 1...Kh6
        • 2.Sf5#
      • 1...g4
        • 2.Sf3#
      • 1...gxh4!
    • 1.Sh8?
      • threat
        • 2.Sg2#
        • 2.Sf3#
        • 2.S4g6#
      • 1...Kh6
        • 2.Sf5#
      • 1...g4
        • 2.Sf3#
      • 1...gxh4!
    • 1.Bg4+?
      • 1...Kxg4
        • 2.Qf3#
      • 1...Kh6!
    • 1.Bf5?
      • threat
        • 2.Sg2#
        • 2.Sf3#
      • 1...gxh4
        • 2.Qxh4#
      • 1...g4
        • 2.Sf3#
      • 1...Kh6!
  • Keys
    • 1.Be8!
      • 1...Kg4
        • 2.Qf3#
      • 1...Kh6
        • 2.Sf5#
      • 1...gxh4
        • 2.Qxh4#
      • 1...g4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_GUARD,S_CUTP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT,XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR(A)+S(C),DCHECK
      • Refutation
        • P(a);XS(D)
    • Try
      • S(D);
      • Threat
        • DUALS(4)
      • Vars
        • K(b);P-FLIGHT::QAR(A)+S(C),DCHECK
        • P(a);::QAR(A)+S(C)
      • Refutation
        • P(a);P_SPINP(a),XS(C)
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR(A)+S(C),DCHECK
        • P(a);::QAR(A)+S(C)
      • Refutation
        • P(a);P_SPINP(a),XS(C)
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR(A)+S(C),DCHECK
        • P(a);::QAR(A)+S(C)
      • Refutation
        • P(a);P_SPINP(a),XS(C)
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR(A)+S(C),DCHECK
        • P(a);::QAR(A)+S(C)
      • Refutation
        • P(a);P_SPINP(a),XS(C)
    • Try
      • B(E);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT,XB(E)::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATE,P_SPINP(a),XS(C)::QAR1(A),XP(a)
        • P(a);::QAR(A)+S(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(E);
    • Vars
      • K(b);N_GUARD,S_CUTP(a),S_FLIGHT::QAB1(A)
      • K(b);N_GUARD,P-FLIGHT::QAR(A)+S(C),DCHECK
      • P(a);OGATE,P_SPINP(a),XS(C)::QAR1(A),XP(a)
      • P(a);SBLOCK::QAR(A)+S(C)
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