MESON Chess Problem Database

Problem Display
PID: 219621 (5b2/8/8/8/3p3Q/k7/2B5/K7 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1977

5b2/8/8/8/3p3Q/k7/2B5/K7

#2

3 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh6
      • 2.Qe7#
    • 1...Be7
      • 2.Qxe7#
    • 1...Bg7
      • 2.Qe7#
    • 1...d3
      • 2.Qa4#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qa5#
      • 1...Bb4
        • 2.Qc1#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Kb4!
    • 1.Qxd4?
      • threat
        • 2.Qb2#
        • 2.Qc3#
        • 2.Qa4#
      • 1...Bb4
        • 2.Qb2#
      • 1...Bg7!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qa5#
      • 1...Bb4
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::QAB(C)
    • B(c);N_GUARD::QAB(C),XB(c)
    • P(b);OGATE::QAR1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • B(c);SBLOCK::QAB(C)
        • B(c);N_GUARD::QAB(C),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • B(c);::QAB1(C)
      • Refutation
        • B(c);P_PINQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • B(c);SBLOCK::QAB(C)
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