MESON Chess Problem Database

Problem Display
PID: 94971 (8/1p6/1R6/2P5/2pkPp2/5Q2/2KN4/8 w - - 0 1)

Ancin, Andrej

Pravda, 1973

8/1p6/1R6/2P5/2pkPp2/5Q2/2KN4/8

#2

6 + 4

14649 Andrej Ancin - Chess Compositions 2008
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qf2#
    • 1...Ke5
      • 2.Qc3#
    • 1...c3
      • 2.Qxc3#
  • Tries
    • 1.Kb1?
      • 1...Kxc5
        • 2.Qf2#
      • 1...Ke5
        • 2.Qc3#
      • 1...c3!
    • 1.Kc1?
      • 1...Kxc5
        • 2.Qf2#
      • 1...Ke5
        • 2.Qc3#
      • 1...c3!
    • 1.Kd1?
      • 1...Kxc5
        • 2.Qf2#
      • 1...Ke5
        • 2.Qc3#
      • 1...c3!
    • 1.Sxc4?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kxc5!
    • 1.Rb5?
      • threat
        • 2.Qc3#
      • 1...c3
        • 2.Qxc3#
      • 1...Ke5!
    • 1.Rc6?
      • threat
        • 2.Qc3#
      • 1...Ke5
        • 2.Qc3#
      • 1...c3
        • 2.Qxc3#
      • 1...bxc6!
    • 1.Rd6+?
      • 1...Ke5
        • 2.Sxc4#
        • 2.Qh5#
        • 2.Qc3#
      • 1...Kxc5!
    • 1.Qa3?
      • 1...Ke5
        • 2.Qc3#
      • 1...c3
        • 2.Qxc3#
      • 1...f3!
    • 1.Qd3+?
      • 1...Kxc5
        • 2.Qd6#
      • 1...Ke5
        • 2.Sf3#
        • 2.Sxc4#
        • 2.Qc3#
        • 2.Qd5#
        • 2.Qd6#
      • 1...cxd3+!
    • 1.Qxf4?
      • 1...Kxc5
        • 2.Qe3#
        • 2.Qd6#
        • 2.Qf2#
      • 1...c3!
  • Keys
    • 1.Kb2!
      • 1...c3+
        • 2.Qxc3#
      • 1...Kxc5
        • 2.Qf2#
      • 1...Ke5
        • 2.Qc3#

This is a version

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XP(E)::QAB(C)
    • K(b);S_FLIGHT::QAB(C)
    • P(a);::QAB1(C),XP(a)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT,XP(E)::QAB(C)
        • K(b);S_FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT,XP(E)::QAB(C)
        • K(b);S_FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT,XP(E)::QAB(C)
        • K(b);S_FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • S(B);XP(a)
      • Vars
        • K(b);P-FLIGHT,XS(B)::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT,XP(E)
    • Try
      • R(F);
      • Threat
        • QAB1(C)
      • Vars
        • P(a);::QAB1(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);S_FLIGHT::QAB(C)
        • P(a);::QAB1(C),XP(a)
      • Refutation
        • P(d);XR(F)
    • Try
      • R(F);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(E)
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB(C)
        • P(a);::QAB1(C),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XP(E)::QAB1(C)
      • Refutation
        • P(a);CHECK,XQ(C)
    • Try
      • Q(C);XP(c)
      • Refutation
        • P(a);
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • P(a);CHECK::QAB1(C),XP(a)
      • K(b);S_FLIGHT,XP(E)::QAB(C)
      • K(b);S_FLIGHT::QAB(C)
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).