MESON Chess Problem Database

Problem Display
PID: 219822 (4R1K1/b1Q2p2/4b1BR/P2k4/P7/B1p5/2N5/8 w - - 0 1)

Grimshaw, Arthur E

Tidskrift for Schack, 1909

4R1K1/b1Q2p2/4b1BR/P2k4/P7/B1p5/2N5/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Be4#
      • 2.Re5#
    • 1...Bg4
      • 2.Be4#
      • 2.Re5#
    • 1...Bf5
      • 2.Re5#
    • 1...Bd7
      • 2.Be4#
      • 2.Re5#
    • 1...Bc8
      • 2.Be4#
      • 2.Re5#
    • 1...Bd4
      • 2.Sb4#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Bb8
      • 2.Qc5#
  • Tries
    • 1.Se3+?
      • 1...Kd4
        • 2.Qf4#
      • 1...Bxe3!
    • 1.Rh5+?
      • 1...Bf5
        • 2.Bxf7#
        • 2.Rxf5#
        • 2.Re5#
      • 1...f5+!
    • 1.Qb7+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Ke5!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qxe6#
      • 1...Bxf7+
        • 2.Bxf7#
      • 1...Kc4
        • 2.Qxe6#
      • 1...Ke5
        • 2.Rh5#
      • 1...Kc6
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(c);OGATE::R1(H)
    • B(d);SBLOCK::S(A)
    • B(d);N_GUARD::QAR1(G),XB(d)
    • B(d);N_GUARD::QAR1(G)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(G)
      • Refutation
        • B(d);XS(A)
    • Try
      • R(F);CHECK
      • Refutation
        • P(e);CHECK,P_SPINP(e)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(G)
      • Refutation
        • K(b);P-FLIGHT,P_SPINB(c)
  • Actual
    • Q(G);P_PINB(c),P_SPINQ(G),XP(e)
    • Threat
      • QAB1(G),XB(c)
    • Vars
      • B(c);CHECK,N_SPINB(c),OGATE,XQ(G)::B(E),XB(c)
      • K(b);S_FLIGHT::QAB(G),XB(c)
      • K(b);P-FLIGHT::R(F)
      • K(b);N_SPINB(c),S_FLIGHT::B(E)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).