MESON Chess Problem Database

Problem Display
PID: 287321 (8/1K1Q3p/p7/3R3r/1pkBNn2/3RPB2/5n1q/8 w - - 0 1)

Swane, Jan Arnold Willem

Probleemblad, 1959

8/1K1Q3p/p7/3R3r/1pkBNn2/3RPB2/5n1q/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd3
      • 2.Sd2#
    • 1...a5
      • 2.Qb5#
  • Tries
    • 1.Qc8+?
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxd3!
    • 1.Qc7+?
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxd3!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qb3#
      • 1...Kxd3
        • 2.Qb3#
      • 1...Kxd5
        • 2.Qb3#
        • 2.Qc6#
      • 1...Rxd5
        • 2.Rc3#
      • 1...S2xd3
        • 2.Sd6#
      • 1...S4xd3
        • 2.Sd2#
      • 1...Sxd5
        • 2.Qxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(e);SBLOCK,XR(A)::S(E)
    • P(g);N_GUARD::QAB1(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);N_GUARD,S_FLIGHT,XR(F)::QAB1(H)
      • Refutation
        • K(d);S_FLIGHT,XR(A)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);N_GUARD,S_FLIGHT,XR(F)::QAB1(H)
      • Refutation
        • K(d);S_FLIGHT,XR(A)
  • Actual
    • Q(H);P_PINP(c)
    • Threat
      • QAB1(H)
    • Vars
      • K(d);N_SPINP(c),S_FLIGHT,XR(A)::QAR2(H)
      • R(f);SBLOCK,XR(F)::R1(A)
      • S(a);SBLOCK,XR(A)::S(E)
      • S(e);SBLOCK,XR(A)::S(E)
      • S(e);SBLOCK,XR(F)::QAB(H),XP(g)
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Developed and maintained by Brian Stephenson.
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