MESON Chess Problem Database

Problem Display
PID: 155142 (5B2/8/1K1p2p1/4R1nr/1p1k1b1N/1B1p4/4PP2/1b1N4 w - - 0 1)

Geary, William

Hobbies, 1907

(First published on Sat May 4 1907)

5B2/8/1K1p2p1/4R1nr/1p1k1b1N/1B1p4/4PP2/1b1N4

#2

8 + 9

15351 SCPF/BCPS Black Books 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Sxf3#
    • 1...Sh3
      • 2.Sf3#
    • 1...Se4
      • 2.Sf3#
    • 1...Se6
      • 2.Sf3#
    • 1...Sf7
      • 2.Sf3#
    • 1...Sh7
      • 2.Sf3#
  • Tries
    • 1.Re4+?
      • 1...Sxe4
        • 2.Sf3#
      • 1...Kxe4!
  • Keys
    • 1.f3!
      • threat
        • 2.Rd5#
      • 1...Kxe5
        • 2.Bg7#
      • 1...Bxe5
        • 2.e3#
      • 1...Sxf3
        • 2.Sxf3#
      • 1...dxe5
        • 2.Bc5#
      • 1...Sh3
        • 2.Re4#
      • 1...Se4
        • 2.Rxe4#
      • 1...Se6
        • 2.Re4#
      • 1...Sf7
        • 2.Re4#
      • 1...Sh7
        • 2.Re4#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::S(E),XS(f)
    • S(f);N_GUARD::S(E)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • S(f);SBLOCK,XR(F)::S(E)
      • Refutation
        • K(d);P-FLIGHT,XR(F)
  • Actual
    • P(C);
    • Threat
      • R1(F)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(F)::B(H)
      • B(e);N_GUARD,SBLOCK,XR(F)::P(B)
      • S(f);XP(C)::S(E),XS(f)
      • P(h);OGATE,SBLOCK,XR(F)::B(H)
      • S(f);N_GUARD::R1(F)
      • S(f);N_GUARD::R1(F),XS(f)
      • P(h);::R1(F),XP(h)
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