MESON Chess Problem Database

Problem Display
PID: 104498 (2K5/N4b2/p1B1p2R/Bpk5/2p2p1R/8/1N5b/3Q4 w - - 0 1)

Nesic, Milivoj S

Match: Macedonia - Serbia, 1983

2K5/N4b2/p1B1p2R/Bpk5/2p2p1R/8/1N5b/3Q4

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Qd4#
    • 1...b4
      • 2.Sa4#
    • 1...e5
      • 2.Qd6#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Qd6#
      • 1...f3
        • 2.Qd4#
      • 1...Be8+!
    • 1.Bb4+?
      • 1...Kb6
        • 2.Qd4#
      • 1...Kxb4!
    • 1.R4h5+?
      • 1...e5
        • 2.Qd6#
      • 1...Bxh5!
    • 1.Rxe6?
      • threat
        • 2.Qd5#
        • 2.Qd6#
      • 1...f3
        • 2.Qd4#
        • 2.Qd5#
      • 1...Bxe6+!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Bb6#
      • 1...Kd6
        • 2.Bb4#
      • 1...f3
        • 2.Qb4#
      • 1...e5
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);::QAB1(A)
    • P(d);N_GUARD::S(B)
    • P(g);::QAB1(A)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Threat
        • QAB1(A)
      • Vars
        • P(c);::QAB1(A)
      • Refutation
        • B(h);CHECK
    • Try
      • B(D);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(A)
      • Refutation
        • K(e);S_FLIGHT,XB(D)
    • Try
      • R(C);CHECK
      • Vars
        • P(g);P_SPINP(g)::QAB1(A)
      • Refutation
        • B(h);XR(C)
    • Try
      • R(F);XP(g)
      • Threat
        • DUALS(2)
      • Refutation
        • B(h);CHECK,XR(F)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::B(D)
      • K(e);P_SPINP(g),S_FLIGHT::B(D)
      • P(c);::QAB1(A)
      • P(g);::QAB(A)
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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).