MESON Chess Problem Database

Problem Display
PID: 36937 (2r4q/3R4/6Q1/b2N3p/R1PrPP2/2pk1b2/2N1p3/1B2K3 w - - 0 1)

Visserman, Eeltje

1st HM., Problemas, 1950

2r4q/3R4/6Q1/b2N3p/R1PrPP2/2pk1b2/2N1p3/1B2K3

#2

10 + 9

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Rdxc4
      • 2.Sdb4#
    • 1...Rxe4
      • 2.Sf6#
    • 1...Rcxc4
      • 2.Scb4#
  • Tries
    • 1.Sxd4+?
      • 1...Kxd4
        • 2.Qg1#
      • 1...c2+!
    • 1.e5+?
      • 1...Re4
        • 2.Sde3#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Se7#
      • 1...Be4!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Scb4#
      • 1...Kxe4
        • 2.Qg6#
      • 1...Rdxc4
        • 2.Sf6#
      • 1...Rxe4
        • 2.Sdb4#
      • 1...Rxd5
        • 2.c5#
      • 1...Bb4
        • 2.Scxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(e);SBLOCK,XP(E)::R(J)+S(H),DCHECK
    • R(e);P_SPINR(e),XP(F)::R(J)+S(H)
    • R(h);SBLOCK,XP(E)::B(A)+S(C),DCHECK
  • Tries
    • Try
      • S(C);CHECK,XR(e)
      • Vars
        • K(c);P-FLIGHT,XS(C)::QAB(I)
      • Refutation
        • P(b);CHECK,P_SPINP(b)
    • Try
      • P(F);CHECK
      • Refutation
        • B(d);P_SPINB(d)
  • Actual
    • Q(I);
    • Threat
      • B(A)+S(C),DCHECK
    • Vars
      • K(c);OGATEB,S_FLIGHT,XP(F)::QAB(I)
      • R(e);P_SPINR(e),XP(E)::R(J)+S(H)
      • R(e);SBLOCK,XP(F)::R(J)+S(H),DCHECK
      • R(e);N_GUARD,P_SPINR(e),XS(H)::QAB(I)+P(E)
      • B(f);::B(A)+S(C),DCHECK,XB(f)
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