MESON Chess Problem Database

Problem Display
PID: 169084 (3br3/4p1B1/2R1pq2/3p3R/3k1N2/1P1P2p1/n2Q2P1/1Bn2K2 w - - 0 1)

Janevski, Zivko

1/2 Place, SuperProblem 044. TT, 2012

3br3/4p1B1/2R1pq2/3p3R/3k1N2/1P1P2p1/n2Q2P1/1Bn2K2

#2

10 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sxe6#
      • 2.Bxe5#
    • 1...Qxg7
      • 2.Sxe6#
    • 1...Sxd3
      • 2.Qxd3#
  • Tries
    • 1.Ke1?
      • threat
        • 2.Sxe6#
      • 1...Qe5+
        • 2.Bxe5#
      • 1...Sxd3+
        • 2.Qxd3#
      • 1...e5!
    • 1.Kg1?
      • threat
        • 2.Sxe6#
      • 1...Se2+
        • 2.Sxe2#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...e5!
    • 1.Bxf6+?
      • 1...e5
        • 2.Se6#
        • 2.Bxe5#
      • 1...exf6!
    • 1.Rxe6?
      • threat
        • 2.Rxd5#
      • 1...Kc5
        • 2.Rxd5#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Qe5!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qe3#
      • 1...Qxf4+
        • 2.Qxf4#
      • 1...Kxe5
        • 2.d4#
      • 1...Qxe5
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_PINS(G),N_SPINQ(g),XB(J)::S(G),XP(f)
    • S(a);OGATE,P_SPINS(a),XP(F)::QAR1(C),XS(a)
  • Tries
    • Try
      • K(B);N_SPINS(G),P-FLIGHT
      • Threat
        • S(G),XP(f)
      • Vars
        • Q(g);CHECK,OGATE::B(J),XQ(g)
        • S(a);CHECK,OGATE,P_SPINS(a),XP(F)::QAR1(C),XS(a)
      • Refutation
        • P(f);N_SPINQ(g)
    • Try
      • K(B);N_SPINS(G),P-FLIGHT
      • Threat
        • S(G),XP(f)
      • Vars
        • S(a);CHECK,N_GUARD::S(G),XS(a)
        • S(a);OGATE,P_SPINS(a),XP(F)::QAR1(C),XS(a)
      • Refutation
        • P(f);N_SPINQ(g)
    • Try
      • B(J);CHECK,N_SPINS(G),XQ(g)
      • Refutation
        • P(h);XB(J)
    • Try
      • R(I);XP(f)
      • Threat
        • R1(H),XP(e)
      • Vars
        • K(d);N_SPINQ(g),P_SPINP(e),S_FLIGHT::R1(H),XP(e)
        • S(b);SBLOCK::QAB1(C)
        • S(b);N_GUARD::QAR2(C),XS(b)
      • Refutation
        • Q(g);N_PINS(G)
  • Actual
    • R(H);N_PINQ(g)
    • Threat
      • QAB1(C)
    • Vars
      • Q(g);CHECK,OGATE,XS(G)::QAR2(C),XQ(g)
      • K(d);OGATE,P_SPINQ(g),S_FLIGHT,XR(H)::P(F)
      • Q(g);N_PINS(G),P_SPINQ(g),XR(H)::S(G),XP(f)
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).