MESON Chess Problem Database

Problem Display
PID: 161612 (8/8/8/7Q/8/B2p4/K1k5/3Rr3 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

8/8/8/7Q/8/B2p4/K1k5/3Rr3

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qc5#
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qb3#
        • 2.Qxd3#
      • 1...Kxd1
        • 2.Qxd3#
      • 1...Kc3
        • 2.Qxd3#
        • 2.Qc5#
      • 1...Re3
        • 2.Qb3#
      • 1...d2
        • 2.Qb3#
        • 2.Qxd2#
      • 1...Rxd1!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxd3#
        • 2.Qb3#
      • 1...Kxd1
        • 2.Qxd3#
      • 1...Kc3
        • 2.Qxd3#
        • 2.Qc5#
      • 1...Rxd1
        • 2.Qb2#
      • 1...Re3
        • 2.Qb3#
      • 1...d2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT,XR(A)::QAR2(D),XP(c)
        • R(a);::QAB1(D)
      • Refutation
        • R(a);XR(A)
  • Actual
    • Q(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XR(A)::QAR2(D),XP(c)
      • R(a);SBLOCK,XR(A)::QAR1(D)
      • R(a);::QAB1(D)
      • P(c);::QAB1(D)
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