MESON Chess Problem Database

Problem Display
PID: 232892 (K7/1RN2Q2/2kp4/8/8/b7/8/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Kudesnik, 2005

K7/1RN2Q2/2kp4/8/8/b7/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd5#
    • 1...Bc5
      • 2.Qe8#
    • 1...d5
      • 2.Qxd5#
  • Tries
    • 1.Sa6?
      • 1...d5
        • 2.Qc7#
        • 2.Qd7#
      • 1...Bc1
        • 2.Qc4#
      • 1...Bb2
        • 2.Qc4#
      • 1...Bc5
        • 2.Sb8#
      • 1...Bb4!
    • 1.Qc4+?
      • 1...Bc5
        • 2.Qb5#
        • 2.Qa4#
      • 1...Kd7!
    • 1.Qf3+?
      • 1...Kc5
        • 2.Qd5#
        • 2.Qc3#
      • 1...d5
        • 2.Qxd5#
      • 1...Kd7!
    • 1.Qf5?
      • threat
        • 2.Qb5#
      • 1...d5
        • 2.Qxd5#
      • 1...Bc5!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qb5#
      • 1...Kd7
        • 2.Qe8#
      • 1...d5
        • 2.Qxd5#
      • 1...Bc5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR1(C)
    • B(a);SBLOCK::QAB(C)
    • P(c);::QAB1(C),XP(c)
  • Tries
    • Try
      • S(B);
      • Vars
        • B(a);N_GUARD::QAR2(C)
        • B(a);SBLOCK::S(B)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAB1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • B(a);
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • P(c);::QAB1(C),XP(c)
      • B(a);SBLOCK::QAB(C)
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