MESON Chess Problem Database

Problem Display
PID: 223629 (3R2n1/2p5/PpNn1p1Q/2bk1P2/6P1/3B4/2N4p/1K6 w - - 0 1)

Farrow, GW

Preston Guardian, 1880

(First published on Sat Mar 20 1880)

3R2n1/2p5/PpNn1p1Q/2bk1P2/6P1/3B4/2N4p/1K6

#2

9 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...h1Q+
      • 2.Qxh1#
    • 1...h1S
      • 2.Qxh1#
    • 1...h1B
      • 2.Qxh1#
    • 1...h1R+
      • 2.Qxh1#
  • Tries
    • 1.S6b4+?
      • 1...Ke5
        • 2.Qxh2#
      • 1...Bxb4!
    • 1.Se7+?
      • 1...Ke5
        • 2.Qxh2#
      • 1...Sxe7!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qh1#
      • 1...Kxc6
        • 2.Sb4#
      • 1...Bg1
        • 2.S2b4#
      • 1...Bf2
        • 2.S2b4#
      • 1...Ba3
        • 2.Se3#
      • 1...Be3
        • 2.Sxe3#
        • 2.S2b4#
      • 1...Bb4
        • 2.Se3#
        • 2.S2xb4#
      • 1...Bd4
        • 2.S2b4#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1S
        • 2.Qxh1#
      • 1...h1B
        • 2.Qxh1#
      • 1...h1R
        • 2.Qxh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK,OGATE::QAB(H),XQ(a)
    • P(a);OGATE::QAB(H),XS(a)
    • P(a);OGATE::QAB(H),XB(a)
    • P(a);CHECK,OGATE::QAB(H),XR(a)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_SPINS(e),P-FLIGHT::QAB(H),XP(a)
      • Refutation
        • B(b);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_SPINS(e),P-FLIGHT::QAB(H),XP(a)
      • Refutation
        • S(h);XS(G)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • K(c);N_SPINS(e),S_FLIGHT,XS(G)::S(B)
      • B(b);N_GUARD::S(B)
      • P(a);P_PINQ(H)::QAB(H),XQ(a)
      • P(a);::QAB(H),XS(a)
      • P(a);::QAB(H),XB(a)
      • P(a);P_PINQ(H)::QAB(H),XR(a)
HTML5 logo

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).