MESON Chess Problem Database

Problem Display
PID: 194182 (3R4/2Qpk3/8/1K2pB2/8/8/8/8 w - - 0 1)

Janet, Frank

Pittsburgh Gazette-Times, 1917

3R4/2Qpk3/8/1K2pB2/8/8/8/8

#2

4 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Rxd7+?
      • 1...Ke8
        • 2.Rd8#
        • 2.Qb8#
        • 2.Qd8#
        • 2.Qc8#
      • 1...Kf8
        • 2.Rd8#
        • 2.Qb8#
        • 2.Qd8#
        • 2.Qc8#
      • 1...Kf6!
  • Keys
    • 1.Qd6+!
      • 1...Kxd6
        • 2.Rxd7#
      • 1...Kf7
        • 2.Qf8#
      • 1...Kxd8
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK,XP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(C);CHECK,N_PINP(b)
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT,XQ(C)::R1(D),XP(b)
      • K(c);OGATE,P-FLIGHT::QAR1(C)
      • K(c);P_SPINP(b),S_FLIGHT,XR(D)::QAR1(C),XP(b)
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