MESON Chess Problem Database

Problem Display
PID: 169223 (3R4/8/2Pp2P1/K1pk1p2/5P2/2P5/2BP4/1Q6 w - - 0 1)

Koshel, Mikhail Igorevich

3/4 Comm., SuperProblem-10 JT, 2016

3R4/8/2Pp2P1/K1pk1p2/5P2/2P5/2BP4/1Q6

#2

9 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Bb3#
      • 2.Qa2#
      • 2.Qb3#
  • Tries
    • 1.Ba4?
      • 1...Kc4
        • 2.Bb3#
      • 1...c4
        • 2.Qxf5#
      • 1...Ke6!
    • 1.Bxf5?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qa2#
      • 1...c4
        • 2.Qb5#
      • 1...Kxc6!
    • 1.Rxd6+?
      • 1...Kc4
        • 2.Bb3#
        • 2.Bd3#
        • 2.Qa2#
        • 2.Qf1#
        • 2.Qb3#
        • 2.Qb5#
      • 1...Kxd6!
    • 1.Re8?
      • 1...Kc4
        • 2.Bb3#
        • 2.Qa2#
        • 2.Qb3#
      • 1...c4
        • 2.Qb5#
      • 1...Kxc6!
    • 1.Qb7?
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke6
        • 2.Qf7#
      • 1...c4!
  • Keys
    • 1.Qb8!
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxc6
        • 2.Rxd6#
      • 1...Ke6
        • 2.Qxd6#
      • 1...c4
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(b);N_SPINP(d),S_FLIGHT::B(B)
        • P(a);SBLOCK::QAR2(A),XP(c)
      • Refutation
        • K(b);N_SPINP(d),S_FLIGHT
    • Try
      • B(B);XP(c)
      • Threat
        • QAB1(A)
      • Vars
        • K(b);N_SPINP(d),S_FLIGHT::QAB(A)
        • P(a);OGATEB::QAR2(A)
      • Refutation
        • K(b);N_SPINP(d),S_FLIGHT,XP(G)
    • Try
      • R(I);CHECK,XP(d)
      • Refutation
        • K(b);P-FLIGHT,XR(I)
    • Try
      • R(I);N_PINP(d)
      • Vars
        • P(a);OGATEB::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINP(d),S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Vars
      • K(b);N_SPINP(d),S_FLIGHT::QAB1(A)
      • K(b);N_SPINP(d),S_FLIGHT,XP(G)::R1(I),XP(d)
      • K(b);N_SPINP(d),S_FLIGHT::QAR1(A),XP(d)
      • P(a);SBLOCK::QAR1(A),XP(d)
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).