MESON Chess Problem Database

Problem Display
PID: 185159 (R7/2p5/2N5/bkNK4/8/1pp5/8/8 w - - 0 1)

Hultquist, Torsten

Prize, Springaren (Beginners' Ty.), 1948

R7/2p5/2N5/bkNK4/8/1pp5/8/8

#2

4 + 5

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Rb8#
    • 1...Bb4
      • 2.Rb8#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Rxa5#
      • 1...Ka4
        • 2.Rxa5#
      • 1...Bb4
        • 2.Sd4#
      • 1...Bb6!
    • 1.Sd4+?
      • 1...Kb6
        • 2.Ra6#
      • 1...Kb4!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Rxa5#
      • 1...Kxa4
        • 2.Rxa5#
      • 1...Bb4
        • 2.Sd4#
      • 1...Bb6
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);P-FLIGHT::R(D)
    • B(c);N_GUARD::R(D)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(D),XB(c)
      • Vars
        • K(d);P_SPINB(c),S_FLIGHT::R1(D),XB(c)
        • B(c);SBLOCK::S(C)
      • Refutation
        • B(c);
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(D)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • R1(D),XB(c)
    • Vars
      • K(d);P_SPINB(c),S_FLIGHT,XS(A)::R1(D),XB(c)
      • B(c);SBLOCK::S(C)
      • B(c);N_GUARD,SBLOCK::S(A),XP(b)
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