MESON Chess Problem Database

Problem Display
PID: 113063 (8/7p/1p2N2B/1p1N2p1/brp4b/Rppk2p1/6Q1/1K6 w - - 0 1)

Shedey, Sergey Oleksandrovich

Krasnoe Znamya, 1966

8/7p/1p2N2B/1p1N2p1/brp4b/Rppk2p1/6Q1/1K6

#2

6 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Rxc3#
    • 1...c2+
      • 2.Qxc2#
    • 1...g4
      • 2.Sxb4#
  • Tries
    • 1.Kc1?
      • threat
        • 2.Qf3#
      • 1...g4
        • 2.Sxb4#
      • 1...b2+!
    • 1.Sdf4+?
      • 1...Ke3
        • 2.Qe2#
      • 1...gxf4!
    • 1.Bxg5?
      • threat
        • 2.Sxb4#
        • 2.Qf3#
      • 1...c2+
        • 2.Qxc2#
      • 1...Bxg5!
  • Keys
    • 1.Sxc3!
      • 1...Kxc3
        • 2.Qc2#
      • 1...Ke3
        • 2.Qe2#
      • 1...b2
        • 2.Qe2#
      • 1...g4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATE,P_SPINP(b)::R1(C),XP(b)
    • P(b);CHECK,P_SPINP(a)::QAB1(B),XP(b)
    • P(j);::S(D),XR(f)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR2(B)
      • Vars
        • P(j);::S(D),XR(f)
      • Refutation
        • P(a);CHECK,P_SPINP(b)
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • P(j);XS(D)
    • Try
      • B(F);XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);CHECK,P_SPINP(a)::QAB1(B),XP(b)
      • Refutation
        • B(h);XB(F)
  • Actual
    • S(D);XP(b)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a),XS(D)::QAR1(B)
      • K(c);P-FLIGHT,P_SPINP(j)::QAR1(B)
      • P(a);::QAB1(B)
      • P(j);::QAR1(B)
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).