MESON Chess Problem Database

Problem Display
PID: 230620 (7Q/8/8/8/7K/3P1k2/2N2p2/7R w - - 0 1)

Chernikh, Vassily

64 Shakhmatnoe obozrenie, 2021

7Q/8/8/8/7K/3P1k2/2N2p2/7R

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kg2
      • 2.Qa8#
    • 1...Kf4
      • 2.Qf6#
  • Tries
    • 1.Rh2?
      • 1...Kf4
        • 2.Rxf2#
        • 2.Qf6#
      • 1...f1Q
        • 2.Qf6#
        • 2.Qf8#
      • 1...f1S
        • 2.Qf6#
        • 2.Qf8#
      • 1...f1B
        • 2.Qf6#
        • 2.Qf8#
      • 1...f1R
        • 2.Qf6#
        • 2.Qf8#
      • 1...Ke2!
    • 1.Qf6+?
      • 1...Kg2
        • 2.Qc6#
      • 1...Ke2!
    • 1.Qh5+?
      • 1...Kg2
        • 2.Qd5#
      • 1...Kf4!
    • 1.Qa8+?
      • 1...Kf4
        • 2.Qe4#
      • 1...Ke2!
    • 1.Qf8+?
      • 1...Kg2
        • 2.Qa8#
      • 1...Ke2!
  • Keys
    • 1.Qa1!
      • 1...Ke2
        • 2.Qd1#
      • 1...Kg2
        • 2.Qa8#
      • 1...Kf4
        • 2.Qf6#
      • 1...f1Q
        • 2.Qxf1#
      • 1...f1S
        • 2.Qxf1#
      • 1...f1B
        • 2.Qxf1#
      • 1...f1R
        • 2.Qxf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(E)
    • K(b);P-FLIGHT::QAR2(E)
  • Tries
    • Try
      • R(A);
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);S_FLIGHT::QAB(E)
      • K(b);P-FLIGHT::QAR2(E)
      • P(a);OGATEB::QAR2(E),XQ(a)
      • P(a);OGATEB::QAR2(E),XS(a)
      • P(a);OGATEB::QAR2(E),XB(a)
      • P(a);OGATEB::QAR2(E),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).