MESON Chess Problem Database

Problem Display
PID: 16815 (K5N1/pR1pQp2/N1kpbp2/p3qp2/rnp4R/B1n5/8/8 w - - 0 1)

Goldschmeding, Cornelis

1st HM., De Probleemvriend, 1943/II

K5N1/pR1pQp2/N1kpbp2/p3qp2/rnp4R/B1n5/8/8

#2

7 + 14

3098 FIDE Album (1914-1944) (I) 1971
4640 Chess Wizardry: The New ABC of Chess Problems 1996
23 Die Schwalbe 2002
56 The Problemist 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qxd7#
    • 1...Scd5
      • 2.Rxc4#
    • 1...Sbd5
      • 2.Sb8#
    • 1...d5
      • 2.Qc5#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Se7#
      • 1...Kd5
        • 2.Se7#
      • 1...Bd5
        • 2.Qc7#
        • 2.Qxd7#
        • 2.Qc8#
      • 1...Scd5
        • 2.Rxc4#
      • 1...Sbd5
        • 2.Sb8#
      • 1...d5!
    • 1.Qxe6?
      • threat
        • 2.Se7#
      • 1...Scd5
        • 2.Rxc4#
        • 2.Qxd7#
      • 1...Sbd5
        • 2.Sb8#
        • 2.Qxd7#
      • 1...Qxe6!
    • 1.Qxd7+?
      • 1...Kd5
        • 2.Se7#
      • 1...Bxd7!
    • 1.Qe8?
      • threat
        • 2.Se7#
      • 1...Kd5
        • 2.Se7#
      • 1...Bd5
        • 2.Qxd7#
        • 2.Qc8#
      • 1...Scd5
        • 2.Rxc4#
      • 1...Sbd5
        • 2.Sb8#
      • 1...d5!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Se7#
      • 1...Kd5
        • 2.Se7#
      • 1...Bd5
        • 2.Qc8#
      • 1...Scd5
        • 2.Rxc4#
      • 1...Sbd5
        • 2.Sb8#
      • 1...d5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(j);N_GUARD,SBLOCK::QAB1(E),XP(m)
    • S(a);SBLOCK,S_CUTB(j),S_CUTQ(f)::R(B),XP(d)
    • S(c);SBLOCK::S(C)
    • P(i);OGATE::QAR1(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • S(G)
      • Vars
        • K(h);S_FLIGHT::S(G)
        • S(a);SBLOCK,S_CUTB(j),S_CUTQ(f)::R(B),XP(d)
        • S(c);SBLOCK::S(C)
      • Refutation
        • P(i);
    • Try
      • Q(E);P_PINP(i),XB(j)
      • Threat
        • S(G)
      • Refutation
        • Q(f);N_SPINP(i),XQ(E)
    • Try
      • Q(E);CHECK,XP(m)
      • Vars
        • K(h);P_SPINP(i),S_FLIGHT::S(G)
      • Refutation
        • B(j);XQ(E)
    • Try
      • Q(E);P_PINP(m)
      • Threat
        • S(G)
      • Vars
        • K(h);N_SPINP(m),S_FLIGHT::S(G)
        • S(a);SBLOCK,S_CUTB(j),S_CUTQ(f)::R(B),XP(d)
        • S(c);SBLOCK::S(C)
      • Refutation
        • P(i);
  • Actual
    • Q(E);
    • Threat
      • S(G)
    • Vars
      • K(h);S_FLIGHT::S(G)
      • B(j);SBLOCK::QAR2(E)
      • S(a);SBLOCK,S_CUTB(j),S_CUTQ(f)::R(B),XP(d)
      • S(c);SBLOCK::S(C)
      • P(i);OGATE::QAR1(E)
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