MESON Chess Problem Database

Problem Display
PID: 146326 (R2Q4/8/8/1kp5/4p3/8/2K5/3B4 w - - 0 1)

McDowell, Michael

The Problemist, 2012

R2Q4/8/8/1kp5/4p3/8/2K5/3B4

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7+?
      • 1...Kb4
        • 2.Ra4#
        • 2.Qa4#
      • 1...Kc4
        • 2.Ra4#
      • 1...Kb6!
  • Keys
    • 1.Rb8+!
      • 1...Ka4
        • 2.Kb2#
      • 1...Kc4
        • 2.Be2#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kc6
        • 2.Rb6#

This is after

After Alexandre Oleinik.

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::R(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(C);CHECK
    • Vars
      • K(b);S_FLIGHT::B(A)+K(B)
      • K(b);S_FLIGHT::B(A)
      • K(b);S_FLIGHT::QAR1(D)
      • K(b);S_FLIGHT::R1(C)
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