MESON Chess Problem Database

Problem Display
PID: 207011 (2rkqR2/3p1b2/5N1p/3R1PN1/7B/8/K7/8 w - - 0 1)

Anonymous

New York Clipper, 1860

2rkqR2/3p1b2/5N1p/3R1PN1/7B/8/K7/8

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh5
      • 2.Rxd7#
    • 1...Bg6
      • 2.Rxd7#
  • Tries
    • 1.Sxf7+?
      • 1...Ke7
        • 2.Sxd7#
        • 2.Sh7#
      • 1...Kc7!
  • Keys
    • 1.Se6+!
      • 1...Ke7
        • 2.Se4#
        • 2.Sg4#
        • 2.Sh5#
        • 2.Sxd7#
        • 2.Sh7#
        • 2.Sxe8#
        • 2.Sg8#
      • 1...Bxe6
        • 2.Sxe8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(c);N_PINR(C)::R1(C),XP(b)
  • Tries
    • Try
      • S(E);CHECK,N_SPINR(C),XB(c)
      • Refutation
        • K(e);N_SPINP(b),N_SPINQ(f),S_FLIGHT
  • Actual
    • S(E);CHECK,N_SPINR(C)
    • Vars
      • B(c);P_PINR(C),XS(E)::B(B)+S(F),XQ(f)
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