MESON Chess Problem Database

Problem Display
PID: 109972 (Q7/3p2p1/3P1pK1/3P4/4kpNR/P1Bpprp1/4Nn2/1B2R1r1 w - - 0 1)

Groeneveld, Cornelis

Hlas l'udu, 1983

Q7/3p2p1/3P1pK1/3P4/4kpNR/P1Bpprp1/4Nn2/1B2R1r1

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe3?
      • threat
        • 2.Qe8#
      • 1...Kxe3
        • 2.Sxg1#
      • 1...Rxe3
        • 2.Rxf4#
      • 1...Sg4!
    • 1.Rh5?
      • threat
        • 2.Qa4#
        • 2.Qe8#
      • 1...Sxg4
        • 2.Qa4#
      • 1...f5!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Qa4#
      • 1...Kxf4
        • 2.Sxf2#
      • 1...Rxf4
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);XP(d)
      • Threat
        • QAR(K)
      • Vars
        • K(g);N_SPINP(c),P-FLIGHT,XS(F)::R(B)+S(C),XR(a)
        • R(e);N_GUARD,SBLOCK,XS(F)::R1(G),XP(h)
      • Refutation
        • S(b);
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XS(F)::QAR(K)
      • Refutation
        • P(i);
  • Actual
    • S(C);XP(h)
    • Threat
      • QAR(K)
    • Vars
      • K(g);N_SPINP(c),P-FLIGHT,XS(C)::R(G)+S(F),XS(b)
      • R(e);N_GUARD,SBLOCK,XS(C)::R1(B),XP(d)
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