MESON Chess Problem Database

Problem Display
PID: 44806 (2B4b/7N/7Q/3pk3/4p3/6R1/8/K1R5 w - - 0 1)

Dashkovsky, Oleksandr N

The Problemist Supplement, 2002

2B4b/7N/7Q/3pk3/4p3/6R1/8/K1R5

#2

6 + 4

5454 Near Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qxf6#
    • 1...d4
      • 2.Rc5#
  • Tries
    • 1.Qg7+?
      • 1...Kf4
        • 2.Rf1#
      • 1...Kd6
        • 2.Rg6#
      • 1...Bxg7!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Rd3#
      • 1...Kf4+
        • 2.Rgc3#
      • 1...Kd6+
        • 2.Rg7#
      • 1...Kd4
        • 2.Qb2#
      • 1...e3
        • 2.Rg4#
      • 1...d4
        • 2.Rg5#

Anticipated by 5011(1897), 148204(1900)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(d);N_GUARD::QAB1(D),XB(d)
    • P(b);OGATEB,SBLOCK::R(B)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);P_PINQ(D),S_FLIGHT::R(B)
        • K(c);P_PINQ(D),S_FLIGHT::R(C)
      • Refutation
        • B(d);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+R(C)
    • Vars
      • K(c);CHECK,S_FLIGHT::QAB(D)+R(C)
      • K(c);S_FLIGHT::QAB(D)
      • P(a);::QAB(D)+R(C)
      • P(b);SBLOCK::QAB(D)+R(C),DCHECK
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