MESON Chess Problem Database

Problem Display
PID: 223198 (8/N4p1Q/4k3/K1PNp3/8/1B2B3/8/8 w - - 0 1)

Hawkins, Xenophon

Nashville Daily American, 1886

8/N4p1Q/4k3/K1PNp3/8/1B2B3/8/8

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe7#
    • 1...f6
      • 2.Sc3#
      • 2.Sb4#
      • 2.Sf4#
      • 2.Sb6#
      • 2.Sc7#
  • Tries
    • 1.Sb6+?
      • 1...Kf6
        • 2.Qxf7#
      • 1...Ke7!
    • 1.Sf6+?
      • 1...Kxf6
        • 2.Qxf7#
      • 1...Ke7!
    • 1.Bg5?
      • threat
        • 2.Sb6#
      • 1...Kd7
        • 2.Qxf7#
      • 1...e4!
  • Keys
    • 1.Ba4!
      • 1...Kxd5
        • 2.Bb3#
      • 1...e4
        • 2.Qxe4#
      • 1...f5
        • 2.Qg8#
        • 2.Qd7#
      • 1...f6
        • 2.Sc7#
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE,SBLOCK::QAR1(G)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(G),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(E)::QAR1(G),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • B(B);
      • Threat
        • B(A)+S(E)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAR2(G),XP(c)
      • Refutation
        • P(a);
  • Actual
    • B(A);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::B(A)
      • P(a);OGATEB::QAR2(G),XP(a)
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Developed and maintained by Brian Stephenson.
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