MESON Chess Problem Database

Problem Display
PID: 70737 (2R2b2/K1P5/p4P2/2kp2Rr/P4pb1/1Q3p2/1P6/5N2 w - - 0 1)

Sivak, Bohuslav

1st Comm., Wola Gulowska, 1989

2R2b2/K1P5/p4P2/2kp2Rr/P4pb1/1Q3p2/1P6/5N2

#2

9 + 8

15345 Wola Gulowska Award 1989

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxd5#
    • 1...Kc6
      • 2.Qxd5#
    • 1...Kd6
      • 2.Qxd5#
    • 1...Bd6
      • 2.Qc3#
  • Tries
    • 1.Rxd5+?
      • 1...Kc6
        • 2.Qb7#
      • 1...Rxd5!
    • 1.Rd8?
      • threat
        • 2.Qc3#
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kc6
        • 2.Qb6#
      • 1...Bd7!
    • 1.Qc4+?
      • 1...Kd6
        • 2.Qxd5#
      • 1...Kxc4!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qxd5#
      • 1...axb5!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Qb6#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kc6
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINP(e),S_FLIGHT::QAR1(C),XP(e)
    • K(d);N_SPINP(e),P-FLIGHT::QAB1(C),XP(e)
    • B(h);SBLOCK::QAR2(C)
  • Tries
    • Try
      • R(E);CHECK,XP(e)
      • Vars
        • K(d);P-FLIGHT::QAB1(C)
      • Refutation
        • R(f);XR(E)
    • Try
      • R(I);
      • Threat
        • QAR2(C)
      • Vars
        • K(d);S_FLIGHT::QAR1(C),XP(e)
        • K(d);N_SPINP(e),P-FLIGHT::QAR1(C)
      • Refutation
        • B(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);N_SPINP(e),S_FLIGHT::QAR1(C),XP(e)
      • Refutation
        • K(d);N_SPINP(e),P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);N_SPINP(e),OGATE,S_FLIGHT::QAR1(C),XP(e)
      • Refutation
        • P(g);XQ(C)
  • Actual
    • S(A);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);N_SPINP(e),S_FLIGHT::QAB1(C)
      • K(d);N_SPINP(e),P-FLIGHT::QAB1(C),XP(e)
      • K(d);N_SPINP(e),S_FLIGHT::QAR1(C),XP(e)
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