MESON Chess Problem Database

Problem Display
PID: 260977 (6b1/8/2N1P1p1/7p/R2NPk1p/6pr/1K3PR1/1Q1B4 w - - 0 1)

Shanshin, Valery Yurevich

2nd Prize, Neue Zurcher Zeitung, 2016

6b1/8/2N1P1p1/7p/R2NPk1p/6pr/1K3PR1/1Q1B4

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Sxe6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.e5#
      • 1...Kg4
        • 2.e5#
      • 1...gxf2
        • 2.Qc1#
      • 1...Bxe6!
    • 1.Sf5?
      • threat
        • 2.Qc1#
      • 1...gxf2
        • 2.e5#
      • 1...Kg5!
    • 1.Qd3?
      • threat
        • 2.Qe3#
      • 1...gxf2
        • 2.Se2#
      • 1...Kg5!
  • Keys
    • 1.e5!
      • threat
        • 2.Sf3#
      • 1...Kg5
        • 2.Qc1#
      • 1...Bxe6
        • 2.Sxe6#
      • 1...gxf2
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(g);XP(J)::S(G),XB(g)
  • Tries
    • Try
      • S(G);
      • Threat
        • R(F)+P(H)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::R(F)+P(H)
        • P(a);XP(D)::QAB(A)
      • Refutation
        • B(g);XP(J)
    • Try
      • S(G);
      • Threat
        • QAB(A)
      • Vars
        • P(a);XP(D)::R(F)+P(H)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(a);XP(D)::S(G)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
  • Actual
    • P(H);
    • Threat
      • R(F)+S(G)
    • Vars
      • K(c);N_GUARD,P_SPINP(a),S_FLIGHT::QAB(A)
      • B(g);XP(J)::R(F)+S(G),DCHECK,XB(g)
      • P(a);XP(D)::R(F)+S(G)
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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).