MESON Chess Problem Database

Problem Display
PID: 208024 (6Q1/4K3/7p/2p1Pp1p/R1n2k2/4p3/7P/8 w - - 0 1)

Babson, Joseph Ney

Dubuque Chess Journal, 1873

6Q1/4K3/7p/2p1Pp1p/R1n2k2/4p3/7P/8

#2

5 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc4+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Kf3!
  • Keys
    • 1.Qxc4+!
      • 1...Kf3
        • 2.Qf1#
      • 1...Kxe5
        • 2.Qe6#
        • 2.Qxc5#
      • 1...Kg5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK,XS(b)
      • Vars
        • K(c);S_FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(E);CHECK,XS(b)
    • Vars
      • K(c);P-FLIGHT::QAR2(E)
      • K(c);S_FLIGHT::QAR(E)
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