MESON Chess Problem Database

Problem Display
PID: 172416 (8/8/8/8/8/Q4N1R/1Bk5/K3b3 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/8/8/8/8/Q4N1R/1Bk5/K3b3

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4+?
      • 1...Kd2
        • 2.Rd3#
        • 2.Qd3#
      • 1...Kd1!
    • 1.Rh2+?
      • 1...Kd1
        • 2.Qb3#
        • 2.Qa4#
      • 1...Bd2
        • 2.Rxd2#
      • 1...Bf2!
  • Keys
    • 1.Rh1!
      • 1...Kd1
        • 2.Qd3#
      • 1...Bc3
        • 2.Qxc3#
      • 1...Bd2
        • 2.Sd4#
      • 1...Bf2
        • 2.Rc1#
        • 2.Qc3#
      • 1...Bg3
        • 2.Rc1#
        • 2.Qc3#
      • 1...Bb4
        • 2.Rc1#
      • 1...Bh4
        • 2.Rc1#
        • 2.Qc3#
      • 1...Ba5
        • 2.Rc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::R1(E),XB(a)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(E);
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT::QAR2(C)
      • B(a);N_GUARD,P_PINB(B)::QAR1(C),XB(a)
      • B(a);SBLOCK::S(D)
      • B(a);OGATE::R1(E)
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