MESON Chess Problem Database

Problem Display
PID: 246387 (Q1R5/8/8/nknN4/4p3/4P3/1PKN4/8 w - - 0 1)

Hermanson, Halvar

Europe Echecs, 1978

Q1R5/8/8/nknN4/4p3/4P3/1PKN4/8

#2

7 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc5+?
      • 1...Ka4
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Kxc5!
  • Keys
    • 1.Sb1!
      • 1...Ka4
        • 2.Sbc3#
      • 1...Kc4
        • 2.Sa3#
      • 1...Sab3
        • 2.Sa3#
      • 1...Sc4
        • 2.Sbc3#
      • 1...Sc6
        • 2.Sa3#
      • 1...Sab7
        • 2.Sa3#
      • 1...Scb3
        • 2.Sbc3#
      • 1...Sd3
        • 2.Sbc3#
      • 1...Sa4
        • 2.Sa3#
      • 1...Sa6
        • 2.Sbc3#
      • 1...Se6
        • 2.Sbc3#
      • 1...Scb7
        • 2.Sbc3#
      • 1...Sd7
        • 2.Sbc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);CHECK,XS(d)
      • Refutation
        • K(c);P-FLIGHT,XR(G)
  • Actual
    • S(C);
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::S(C)
      • K(c);P_SPINS(d),S_FLIGHT::S(C)
      • S(b);::S(C)
      • S(b);SBLOCK::S(C)
      • S(d);::S(C)
      • S(d);SBLOCK::S(C)
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