MESON Chess Problem Database

Problem Display
PID: 273725 (8/8/5B1Q/1B2R3/2Nkn2b/1P6/2Kp4/3n1r2 w - - 0 1)

Goldschmeding, Cornelis

3rd Prize, Grunenwald/Monreal JT (diagrammes), 1978

8/8/5B1Q/1B2R3/2Nkn2b/1P6/2Kp4/3n1r2

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qe3#
    • 1...Sdf2
      • 2.Qe3#
    • 1...Sdc3
      • 2.Qe3#
    • 1...Se3+
      • 2.Qxe3#
    • 1...Sec3
      • 2.Qxd2#
    • 1...Sg3
      • 2.Qxd2#
    • 1...Sd6
      • 2.Qxd2#
    • 1...Sxf6
      • 2.Qxd2#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Rg5#
        • 2.Qxe4#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Bxf6
        • 2.Qxe4#
      • 1...Re1
        • 2.Rg5#
      • 1...Bg5
        • 2.Rxg5#
        • 2.Qxe4#
      • 1...Sf2
        • 2.Rg5#
        • 2.Qe3#
      • 1...Sc3
        • 2.Rg5#
        • 2.Qe3#
      • 1...Rxf4!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Rd5#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Sxf6
        • 2.Qxd2#
      • 1...Sef2
        • 2.Rg5#
      • 1...Sec3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...Sc5
        • 2.Re4#
      • 1...Sg5
        • 2.Rf5#
      • 1...Sd6
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAB1(G)
    • S(a);CHECK,N_GUARD::QAB1(G),XS(a)
    • S(e);N_GUARD::QAR2(G),XP(c)
    • S(e);N_GUARD,XB(F)::QAR2(G),XP(c)
  • Tries
    • Try
      • Q(G);P_PINS(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);CHECK,N_GUARD::QAB1(G),XS(a)
        • B(f);XB(F)::QAR1(G),XS(e)
        • R(b);::B(F)+R(E)
      • Refutation
        • R(b);N_SPINS(e),XQ(G)
  • Actual
    • B(D);
    • Threat
      • B(F)+R(E),DCHECK
    • Vars
      • S(a);CHECK,N_GUARD::QAB1(G),XS(a)
      • S(e);N_GUARD,XB(F)::QAR2(G),XP(c)
      • S(e);N_GUARD,S_CUTR(b)::B(F)+R(E)
      • S(e);N_GUARD::QAR2(G),XP(c)
      • S(e);SBLOCK::B(F)+R(E),DCHECK
      • S(e);N_GUARD,S_CUTB(f)::B(F)+R(E)
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