MESON Chess Problem Database

Problem Display
PID: 183072 (3R3Q/1kp5/1bN5/8/2K5/8/8/8 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2017

3R3Q/1kp5/1bN5/8/2K5/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qh1#
  • Tries
    • 1.Rb8+?
      • 1...Ka6
        • 2.Qc8#
      • 1...Kxc6!
    • 1.Qb2?
      • 1...Kxc6
        • 2.Qg2#
      • 1...Ka6!
  • Keys
    • 1.Kb5!
      • threat
        • 2.Rb8#
      • 1...Ba7
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(B)::QAB(D)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(D)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • Q(D);P_PINB(a)
      • Vars
        • K(b);N_SPINB(a),OGATEB,S_FLIGHT,XS(B)::QAB(D)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • R1(C)
    • Vars
      • B(a);N_GUARD,SBLOCK::S(B)
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