MESON Chess Problem Database

Problem Display
PID: 206072 (b7/8/8/6P1/5P2/3Qpk1B/4N3/4K3 w - - 0 1)

Chernikh, Vassily

Zadachi i Etyudi, 2018

b7/8/8/6P1/5P2/3Qpk1B/4N3/4K3

#2

6 + 3

5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qxd5#
  • Tries
    • 1.Qb5?
      • 1...Ke4
        • 2.Bg2#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Be4!
  • Keys
    • 1.Qd7!
      • 1...Ke4
        • 2.Bg2#
      • 1...Be4
        • 2.Qg4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#

Anticipated by 15785(1987)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::QAB(C),XB(c)
  • Tries
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::B(D)
        • B(c);N_GUARD::QAB(C),XB(c)
      • Refutation
        • B(c);
  • Actual
    • Q(C);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::B(D)
      • B(c);SBLOCK::QAB1(C)
      • B(c);N_GUARD::QAB(C),XB(c)
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