MESON Chess Problem Database

Problem Display
PID: 237003 (8/2pQPqB1/8/4PNp1/1Np1k1p1/4p1P1/b7/3B2K1 w - - 0 1)

Goldschmeding, Cornelis

Schakend Nederland, 1980

8/2pQPqB1/8/4PNp1/1Np1k1p1/4p1P1/b7/3B2K1

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Qd5#
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Bxg4?
      • threat
        • 2.Qd4#
      • 1...Qxf5
        • 2.Qd5#
      • 1...Qd5
        • 2.Qxd5#
      • 1...c5!
    • 1.Qc6+?
      • 1...Kxf5
        • 2.Bc2#
      • 1...Qd5!
    • 1.Qd5+?
      • 1...Kxf5
        • 2.Bc2#
      • 1...Qxd5!
  • Keys
    • 1.e6!
      • threat
        • 2.Qd5#
      • 1...Kxf5
        • 2.Bc2#
      • 1...Qxe6
        • 2.Qxe6#
      • 1...Qxf5
        • 2.Qd4#
      • 1...c3
        • 2.Qd3#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_GUARD,SBLOCK,XS(F)::QAB1(G)
    • P(c);N_GUARD::QAB1(G)
  • Tries
    • Try
      • B(A);XP(e)
      • Threat
        • QAR1(G)
      • Vars
        • Q(h);N_GUARD,XS(F)::QAB1(G)
        • Q(h);N_GUARD::QAB1(G),XQ(h)
      • Refutation
        • P(g);
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(F)::B(A)
      • Refutation
        • Q(h);P_SPINQ(h)
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(F)::B(A)
      • Refutation
        • Q(h);XQ(G)
  • Actual
    • P(E);
    • Threat
      • QAB1(G)
    • Vars
      • K(d);S_FLIGHT,XS(F)::B(A)
      • Q(h);OGATE,XP(E)::QAR2(G),XQ(h)
      • Q(h);SBLOCK,XS(F)::QAR1(G)
      • P(c);N_GUARD::QAB1(G)
      • P(g);N_GUARD::S(F)
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