MESON Chess Problem Database

Problem Display
PID: 213693 (1K6/8/pk6/2p5/7Q/1P6/8/5B2 w - - 0 1)

Kichigin, Viktor Vladimirovich

Land og Folk, 1979

1K6/8/pk6/2p5/7Q/1P6/8/5B2

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Qf6#
      • 2.Qh6#
  • Tries
    • 1.Qe1?
      • 1...Kc6
        • 2.Qe6#
      • 1...a5
        • 2.Qe6#
      • 1...c4!
    • 1.Qf2?
      • 1...Ka5
        • 2.Qxc5#
      • 1...a5
        • 2.Qf6#
      • 1...Kc6!
    • 1.Qe7?
      • threat
        • 2.Qc7#
      • 1...Ka5
        • 2.Qxc5#
      • 1...Kc6
        • 2.Qe6#
      • 1...c4!
    • 1.Qa4?
      • threat
        • 2.Qxa6#
      • 1...a5
        • 2.Qb5#
      • 1...c4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxa6#
      • 1...Ka5
        • 2.Qxc5#
      • 1...Kc6
        • 2.Qe6#
      • 1...a5
        • 2.Qb5#
        • 2.Qa6#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
        • P(b);SBLOCK::QAR(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);P_PINP(a)
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT::QAR2(C),XP(a)
        • P(b);SBLOCK::QAR(C)
      • Refutation
        • K(c);N_SPINP(a),P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT::QAR2(C),XP(a)
        • K(c);P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • P(b);N_GUARD::QAR1(C)
      • Refutation
        • P(a);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(b)
    • Vars
      • K(c);S_FLIGHT::QAR2(C),XP(a)
      • K(c);P-FLIGHT,P_SPINP(a)::QAR2(C)
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