MESON Chess Problem Database

Problem Display
PID: 87930 (8/8/5pQ1/1KB1k3/8/1B2p3/8/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Problemista, 1963

8/8/5pQ1/1KB1k3/8/1B2p3/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bxe3?
      • 1...f5
        • 2.Qe6#
      • 1...Kd6!
    • 1.Qd3?
      • threat
        • 2.Bd6#
      • 1...f5
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qg4?
      • 1...f5
        • 2.Qd4#
      • 1...e2!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qe4#
      • 1...Kf4
        • 2.Bd6#
      • 1...Kxd5
        • 2.Qf5#
      • 1...f5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);XP(a)
      • Vars
        • P(c);OGATE::QAR1(D)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • B(C)
      • Vars
        • P(c);SBLOCK::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK::QAB1(D)
      • Refutation
        • P(a);
  • Actual
    • B(A);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);S_FLIGHT::B(C)
      • K(b);P-FLIGHT,XB(A)::QAR2(D)
      • P(c);OGATE,SBLOCK::QAB1(D)
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