MESON Chess Problem Database

Problem Display
PID: 39563 (8/8/b1B5/8/3p4/B2k4/1Q3K2/8 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

1/2 Prize, Smena, 1995

8/8/b1B5/8/3p4/B2k4/1Q3K2/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qc2#
  • Tries
    • 1.Kf3?
      • 1...Kc4
        • 2.Qc2#
      • 1...Bc4
        • 2.Be4#
      • 1...Bb5
        • 2.Bxb5#
      • 1...Bc8
        • 2.Bb5#
      • 1...Bb7!
    • 1.Bb4?
      • threat
        • 2.Qe2#
        • 2.Qb3#
      • 1...Bc4
        • 2.Qb1#
        • 2.Qd2#
        • 2.Qe2#
      • 1...Kc4!
    • 1.Ba4?
      • threat
        • 2.Qc2#
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4!
    • 1.Be4+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kxe4!
    • 1.Qb1+?
      • 1...Kd2
        • 2.Bb4#
      • 1...Kc4
        • 2.Qc2#
      • 1...Kc3!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Qc2#
      • 1...Kxd2!
  • Keys
    • 1.Ke1!
      • threat
        • 2.Qb3#
      • 1...Ke3
        • 2.Qd2#
      • 1...Kc4
        • 2.Qc2#
      • 1...Bc4
        • 2.Qd2#

Anticipated by 50486(1962)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • B(c);SBLOCK::B(D)
        • B(c);N_GUARD::B(D),XB(c)
        • B(c);N_GUARD::B(D)
      • Refutation
        • B(c);P_PINB(D)
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XB(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::B(C)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR2(A)
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR2(A)
      • B(c);SBLOCK::QAR1(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).