MESON Chess Problem Database

Problem Display
PID: 195118 (QRb4n/1P2p1K1/p2k4/4N3/3p4/1B6/8/2R5 w - - 0 1)

Shinkman, William Anthony

Wurzburg, Otto

Densmore MT (Pittsburgh Gazette-Times), 1918

QRb4n/1P2p1K1/p2k4/4N3/3p4/1B6/8/2R5

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sf7+?
      • 1...Kd7
        • 2.bxc8Q#
      • 1...Sxf7!
    • 1.Qa7?
      • threat
        • 2.Qxd4#
        • 2.Qc5#
      • 1...Bxb7
        • 2.Qc5#
      • 1...e6
        • 2.Qc5#
      • 1...Be6
        • 2.Qc5#
      • 1...d3
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kxe5!
    • 1.bxc8Q?
      • threat
        • 2.Sc4#
        • 2.Qd5#
        • 2.Qe6#
        • 2.Qc5#
        • 2.Qc7#
      • 1...e6
        • 2.Qxe6#
        • 2.Qc5#
        • 2.Qc7#
      • 1...Kxe5!
  • Keys
    • 1.Sc4+!
      • 1...Kc5
        • 2.bxc8Q#
        • 2.bxc8R#
      • 1...Kd5
        • 2.bxc8Q#
      • 1...Kc6
        • 2.bxc8Q#
      • 1...Ke6
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Kc7
        • 2.bxc8Q#
      • 1...Kd7
        • 2.bxc8Q#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::PXB(e)=Q
      • Refutation
        • S(f);XS(C)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);XP(D)::QAB1(F)
        • P(d);::QAB1(F)
        • B(e);::QAB1(F)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • P(D);XB(e)
      • Threat
        • DUALS(5)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
  • Actual
    • S(C);CHECK
    • Vars
      • K(c);S_FLIGHT::PXB(e)=Q
      • K(c);P-FLIGHT::PXB(e)=Q
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