MESON Chess Problem Database

Problem Display
PID: 196972 (8/8/K2p4/3r4/p1N1Q3/Pk6/1B6/8 w - - 0 1)

Keysor, William Ellis

Brisbane Courier, 1919

8/8/K2p4/3r4/p1N1Q3/Pk6/1B6/8

#2

5 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2+?
      • 1...Ka2
        • 2.Bc3#
        • 2.Bd4#
        • 2.Be5#
        • 2.Bf6#
        • 2.Bg7#
        • 2.Bh8#
      • 1...Kxc2!
  • Keys
    • 1.Qb1!
      • 1...Ra5+
        • 2.Sxa5#
      • 1...Kxc4
        • 2.Qc2#
      • 1...Rd1
        • 2.Sa5#
      • 1...Rd2
        • 2.Sxd2#
        • 2.Sa5#
      • 1...Rd3
        • 2.Sa5#
      • 1...Rd4
        • 2.Sa5#
      • 1...Rb5
        • 2.Sd2#
      • 1...Rc5
        • 2.Sd2#
      • 1...Re5
        • 2.Sd2#
      • 1...Rf5
        • 2.Sd2#
      • 1...Rg5
        • 2.Sd2#
      • 1...Rh5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • R(c);CHECK,N_GUARD::S(C),XR(c)
      • K(a);S_FLIGHT,XS(C)::QAR2(D)
      • R(c);N_GUARD::S(C)
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