MESON Chess Problem Database

Problem Display
PID: 117591 (8/p7/QR6/7N/8/1K2kP2/4P3/2N4R w - - 0 1)

Markovtsy, Vassyl Yuriovich

Apprenti Sorcier, 1992

8/p7/QR6/7N/8/1K2kP2/4P3/2N4R

#2

8 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Qd3#
  • Tries
    • 1.Kc3?
      • 1...axb6
        • 2.Qxb6#
      • 1...Kf2!
    • 1.Rd1?
      • 1...axb6
        • 2.Qxb6#
      • 1...Kf2!
    • 1.Rf1?
      • threat
        • 2.Qd3#
      • 1...Kd2
        • 2.Qd3#
      • 1...Kd4!
    • 1.Rb4?
      • 1...Kd2
        • 2.Qd3#
        • 2.Qh6#
      • 1...Kf2!
    • 1.Rb5?
      • 1...Kd2
        • 2.Qh6#
      • 1...Kd4
        • 2.Qxa7#
      • 1...Kf2!
    • 1.Re6+?
      • 1...Kd2
        • 2.Qd3#
        • 2.Qa2#
        • 2.Qa5#
        • 2.Qd6#
      • 1...Kd4
        • 2.Qc4#
        • 2.Qd6#
      • 1...Kf2!
    • 1.Rg6?
      • 1...Kd2
        • 2.Qd3#
      • 1...Kf2
        • 2.Qxa7#
      • 1...Kd4!
  • Keys
    • 1.Qxa7!
      • threat
        • 2.Rd6#
      • 1...Kd2
        • 2.Rd6#
      • 1...Kf2
        • 2.Rg6#
      • 1...Kd4
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(G)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);OGATE,XR(H)::QAB(G),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • P(b);OGATE,XR(H)::QAB(G),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • QAR1(G)
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(H);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • K(a);S_FLIGHT::QAB(G),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(H);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • K(a);S_FLIGHT::QAB(G),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);XP(b)
    • Threat
      • QAB(G)+R(H)
    • Vars
      • K(a);S_FLIGHT::R(H)
      • K(a);S_FLIGHT::QAB(G)+R(H)
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).