MESON Chess Problem Database

Problem Display
PID: 239877 (1Q6/R1Bpb3/2p5/6p1/1p1P4/1k6/N7/2K2B2 w - - 0 1)

Bourd, Evgeny

Variantim, 2009

1Q6/R1Bpb3/2p5/6p1/1p1P4/1k6/N7/2K2B2

#2

7 + 6

721 Variantim 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qg8#
    • 1...Bf6
      • 2.Qxb4#
    • 1...Bd8
      • 2.Qxb4#
    • 1...d6
      • 2.Qxb4#
  • Tries
    • 1.Bb6?
      • threat
        • 2.Qg3#
      • 1...Bd6
        • 2.Qg8#
      • 1...d6!
    • 1.Bd6?
      • threat
        • 2.Qxb4#
        • 2.Qg8#
      • 1...Bxd6
        • 2.Qg8#
      • 1...Bd8
        • 2.Qxb4#
      • 1...Bf8
        • 2.Qxb4#
      • 1...c5!
    • 1.Bd8?
      • threat
        • 2.Qg3#
      • 1...d6
        • 2.Qxb4#
      • 1...Bd6!
    • 1.Qb5?
      • threat
        • 2.Bc4#
        • 2.Qd3#
        • 2.Qa4#
        • 2.Qc4#
      • 1...d5
        • 2.Qd3#
        • 2.Qa4#
      • 1...cxb5!
    • 1.Qh8?
      • threat
        • 2.Qh3#
      • 1...Bd6
        • 2.Qg8#
      • 1...g4!
  • Keys
    • 1.Bh2!
      • threat
        • 2.Qg3#
      • 1...Bd6
        • 2.Qg8#
      • 1...d6
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(f);S_CUTP(e)::QAB(G)
    • B(f);N_GUARD::QAR1(G),XP(b)
    • P(e);S_CUTB(f)::QAR1(G),XP(b)
  • Tries
    • Try
      • B(F);N_PINP(b)
      • Threat
        • QAR(G)
      • Vars
        • B(f);S_CUTP(e)::QAB(G)
      • Refutation
        • P(e);
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XB(F)::QAB(G)
        • B(f);::QAR1(G),XP(b)
      • Refutation
        • P(d);
    • Try
      • B(F);
      • Threat
        • QAR(G)
      • Vars
        • P(e);S_CUTB(f)::QAR1(G),XP(b)
      • Refutation
        • B(f);
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Refutation
        • P(d);N_SPINP(b),XQ(G)
    • Try
      • Q(G);N_PINP(b)
      • Threat
        • QAR(G)
      • Vars
        • B(f);S_CUTP(e)::QAB(G)
      • Refutation
        • P(c);
  • Actual
    • B(F);
    • Threat
      • QAR(G)
    • Vars
      • B(f);S_CUTP(e)::QAB(G)
      • P(e);S_CUTB(f)::QAR1(G),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).