MESON Chess Problem Database

Problem Display
PID: 172299 (3R4/Q7/8/pkB5/2b5/8/1K6/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

3R4/Q7/8/pkB5/2b5/8/1K6/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb6#
    • 1...a4
      • 2.Qb6#
  • Tries
    • 1.Rb8+?
      • 1...Ka4
        • 2.Rb4#
      • 1...Kc6!
    • 1.Qxa5+?
      • 1...Kc6
        • 2.Qb6#
      • 1...Kxa5!
    • 1.Qd7+?
      • 1...Ka6
        • 2.Ra8#
        • 2.Qc6#
      • 1...Kxc5!
  • Keys
    • 1.Rd4!
      • 1...Ka4
        • 2.Qd7#
      • 1...Kc6
        • 2.Qb6#
      • 1...Bf1
        • 2.Qb6#
      • 1...Ba2
        • 2.Qb6#
      • 1...Be2
        • 2.Qb6#
      • 1...Bb3
        • 2.Qb6#
      • 1...Bd3
        • 2.Qb6#
      • 1...Bd5
        • 2.Qb6#
      • 1...Be6
        • 2.Qb6#
      • 1...Bf7
        • 2.Qb6#
      • 1...Bg8
        • 2.Qb6#
      • 1...a4
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(C)
    • P(b);SBLOCK::QAR1(C)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(c);OGATE,P_SPINP(b),S_FLIGHT::R1(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
      • Refutation
        • K(c);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);P-FLIGHT,XB(B)
  • Actual
    • R(D);
    • Vars
      • K(c);P_SPINB(a),P_SPINP(b),S_FLIGHT::QAB(C)
      • K(c);S_FLIGHT::QAR1(C)
      • B(a);::QAR1(C)
      • P(b);SBLOCK::QAR1(C)
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