MESON Chess Problem Database

Problem Display
PID: 222463 (4Kb2/1P4p1/4p3/2p1k1p1/1N1pP1p1/1N4R1/2B2B2/5R2 w - - 0 1)

Whitner, HK

Philadelphia Times, 1883

4Kb2/1P4p1/4p3/2p1k1p1/1N1pP1p1/1N4R1/2B2B2/5R2

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.b8Q#
      • 2.b8B#
  • Tries
    • 1.Sc6+?
      • 1...Kf4
        • 2.Be1#
      • 1...Kf6
        • 2.e5#
      • 1...Kd6!
    • 1.Bxd4+?
      • 1...Kd6
        • 2.b8Q#
        • 2.b8B#
      • 1...cxd4!
    • 1.Rxg4?
      • threat
        • 2.Bg3#
      • 1...Kd6
        • 2.b8Q#
        • 2.b8B#
      • 1...Kf6!
    • 1.b8Q+?
      • 1...Kf6
        • 2.e5#
      • 1...Bd6!
    • 1.b8B+?
      • 1...Kf6
        • 2.e5#
      • 1...Bd6!
  • Keys
    • 1.Re3!
      • threat
        • 2.Bg3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.b8Q#
        • 2.b8B#
      • 1...Kf6
        • 2.e5#
      • 1...g3
        • 2.Bxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::P=Q
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT::R(A)+B(C)
        • K(d);OGATE,S_FLIGHT::P(G)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(C);CHECK,XP(a)
      • Vars
        • K(d);S_FLIGHT::P=Q
      • Refutation
        • P(c);XB(C)
    • Try
      • R(E);XP(b)
      • Threat
        • B(C)
      • Vars
        • K(d);S_FLIGHT::P=Q
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(H);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::P(G)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • P(H);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::P(G)
      • Refutation
        • B(h);P_SPINB(h)
  • Actual
    • R(E);
    • Threat
      • B(C)
    • Vars
      • K(d);S_FLIGHT::S(F)
      • K(d);S_FLIGHT::P=Q
      • K(d);OGATE,S_FLIGHT::P(G)
      • P(b);::B(C),XP(b)
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).