MESON Chess Problem Database

Problem Display
PID: 164207 (8/8/8/8/3P4/8/pk2K3/R1N4Q w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1988

8/8/8/8/3P4/8/pk2K3/R1N4Q

#2

5 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa1
      • 2.Sd3#
  • Tries
    • 1.Kd2?
      • 1...Kxa1
        • 2.Sd3#
      • 1...Ka3!
    • 1.Qf3?
      • 1...Kc2
        • 2.Qb3#
      • 1...Kxa1!
    • 1.Qd5?
      • 1...Kxa1
        • 2.Qxa2#
      • 1...Kc2
        • 2.Qb3#
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3!
    • 1.Qd1?
      • 1...Kxa1
        • 2.Sd3#
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3!
    • 1.Qh3?
      • 1...Kc2
        • 2.Qb3#
      • 1...Kxa1!
  • Keys
    • 1.Qe1!
      • 1...Kxa1
        • 2.Sd3#
      • 1...Kc2
        • 2.Qd2#
      • 1...Ka3
        • 2.Rxa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XR(A)::QAR(C)+S(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT,XR(A)::QAR(C)+S(B)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT,XR(A)::QAR1(C),XP(a)
        • K(b);P-FLIGHT::QAB1(C)
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT,XR(A)::QAR(C)+S(B)
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
  • Actual
    • Q(C);
    • Vars
      • K(b);S_FLIGHT,XR(A)::QAR(C)+S(B)
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);P_SPINP(a),S_FLIGHT::R1(A),XP(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).