MESON Chess Problem Database

Problem Display
PID: 232712 (2N5/q1n2b2/8/p5p1/3k4/6Q1/3N3K/2R2B2 w - - 0 1)

Goldschmeding, Cornelis

Freie Presse, 1967

2N5/q1n2b2/8/p5p1/3k4/6Q1/3N3K/2R2B2

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qd6#
    • 1...Bd5
      • 2.Qc3#
    • 1...Sd5
      • 2.Rc4#
  • Tries
    • 1.Sf3+?
      • 1...Ke3
        • 2.Re1#
      • 1...Kd5
        • 2.Qe5#
      • 1...Ke4!
    • 1.Rc4+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Bxc4!
    • 1.Rc5?
      • threat
        • 2.Qf2#
        • 2.Qe5#
        • 2.Qg1#
        • 2.Qc3#
      • 1...Kxc5
        • 2.Qd6#
      • 1...Sb5
        • 2.Qf2#
        • 2.Qe5#
        • 2.Qg1#
      • 1...Bc4
        • 2.Qe5#
      • 1...Bd5
        • 2.Qc3#
      • 1...Sd5
        • 2.Rc4#
      • 1...Qxc5!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Qd6#
        • 2.Qe4#
      • 1...gxf4!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Bg2#
        • 2.Qe4#
      • 1...Kxe3!
  • Keys
    • 1.Re1!
      • threat
        • 2.Qe5#
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Qc5
        • 2.Qd3#
      • 1...Bd5
        • 2.Qe3#
      • 1...Sd5
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(E)
    • B(f);SBLOCK::QAB1(E)
    • S(e);SBLOCK,S_CUTB(f)::R1(A)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::R(A)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • B(f);XR(A)
    • Try
      • R(A);
      • Threat
        • DUALS(4)
      • Vars
        • K(a);S_FLIGHT,XR(A)::QAB1(E)
        • B(f);::QAB1(E)
        • S(e);SBLOCK,S_CUTB(f)::R1(A)
      • Refutation
        • Q(d);XR(A)
    • Try
      • Q(E);CHECK
      • Refutation
        • P(c);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
  • Actual
    • R(A);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
      • Q(d);SBLOCK::QAR1(E)
      • B(f);SBLOCK::QAB1(E)
      • S(e);SBLOCK,S_CUTB(f)::S(C)
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