MESON Chess Problem Database

Problem Display
PID: 108640 (1B3R1K/2R2p2/4P3/1N2krp1/1Nr1Pp2/8/B2PP2Q/8 w - - 0 1)

Kiss, Janos

Banska Bystrica (BABY), 1960

1B3R1K/2R2p2/4P3/1N2krp1/1Nr1Pp2/8/B2PP2Q/8

#2

12 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Rxc4#
    • 1...Rxe4
      • 2.Rcxf7#
    • 1...fxe6
      • 2.Rxc4#
  • Tries
    • 1.Rc6+?
      • 1...Kxe4
        • 2.Rxc4#
      • 1...Kf6!
    • 1.Qh3?
      • threat
        • 2.Qxf5#
      • 1...Kxe4
        • 2.Rxc4#
      • 1...Kxe6
        • 2.Qxf5#
      • 1...Kf6
        • 2.Qxf5#
      • 1...Rxe4
        • 2.Rcxf7#
      • 1...fxe6
        • 2.Rxc4#
      • 1...Rf6
        • 2.Rxc4#
      • 1...g4!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qxf5#
      • 1...Kxe4
        • 2.Rxc4#
      • 1...Kxe6
        • 2.Qxf5#
      • 1...Kf6
        • 2.Qxf5#
      • 1...Rxe4
        • 2.Rcxf7#
      • 1...fxe6
        • 2.Rxc4#
      • 1...Rf6
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(b),P-FLIGHT,XP(F)::R(I),XR(a)
    • R(a);N_GUARD,SBLOCK,XP(F)::B(J)+R(I),XP(f)
    • P(f);SBLOCK,XP(H)::B(J)+R(I),XR(a)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT,XP(F)::R(I),XR(a)
      • Refutation
        • K(c);N_SPINP(b),P_SPINP(f),S_FLIGHT
    • Try
      • Q(D);N_PINP(b)
      • Threat
        • QAR1(D),XR(d)
      • Vars
        • K(c);P-FLIGHT,XP(F)::R(I),XR(a)
        • K(c);P-FLIGHT,P_SPINR(a),XP(H)::QAB1(D),XR(d)
        • K(c);P_SPINP(f),S_FLIGHT::QAR1(D),XR(d)
        • R(a);N_GUARD,SBLOCK,XP(F)::B(J)+R(I),XP(f)
        • P(f);SBLOCK,XP(H)::B(J)+R(I),XR(a)
        • R(d);SBLOCK::B(J)+R(I),XR(a)
      • Refutation
        • P(e);
  • Actual
    • Q(D);N_PINP(b)
    • Threat
      • QAR1(D),XR(d)
    • Vars
      • K(c);P-FLIGHT,P_SPINR(d),XP(F)::R(I),XR(a)
      • K(c);P-FLIGHT,P_SPINR(a),XP(H)::QAB1(D),XR(d)
      • K(c);P_SPINP(f),S_FLIGHT::QAR1(D),XR(d)
      • R(a);N_GUARD,SBLOCK,XP(F)::B(J)+R(I),XP(f)
      • P(f);SBLOCK,XP(H)::B(J)+R(I),XR(a)
      • R(d);SBLOCK::B(J)+R(I)
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