MESON Chess Problem Database

Problem Display
PID: 272592 (8/7R/5p2/4k3/1bB1P3/BN1P4/K4P2/2Q5 w - - 0 1)

Shtern, David

Variantim, 2023

8/7R/5p2/4k3/1bB1P3/BN1P4/K4P2/2Q5

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Re7#
      • 2.f4#
    • 1...Bc3
      • 2.Re7#
      • 2.f4#
    • 1...Ba5
      • 2.Re7#
      • 2.f4#
    • 1...Bd6
      • 2.Bb2#
      • 2.f4#
    • 1...Be7
      • 2.Rxe7#
      • 2.f4#
    • 1...Bf8
      • 2.f4#
  • Tries
    • 1.Rd7?
      • threat
        • 2.f4#
      • 1...Bd2
        • 2.Bd6#
      • 1...f5!
    • 1.Re7+?
      • 1...Bxe7
        • 2.f4#
      • 1...Kd6!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qh2#
      • 1...Kd6
        • 2.Qxf6#
      • 1...Bd2
        • 2.Re7#
      • 1...f5
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);::P(C)
  • Tries
    • Try
      • R(I);
      • Threat
        • P(C)
      • Vars
        • B(a);OGATE::B(D)
      • Refutation
        • P(c);
    • Try
      • R(I);CHECK
      • Vars
        • B(a);XR(I)::P(C)
      • Refutation
        • K(b);P_SPINB(a),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(b);N_GUARD,P_SPINB(a),P_SPINP(c),S_FLIGHT::QAR2(A),XP(c)
      • B(a);N_GUARD::R(I)
      • P(c);::P(C)
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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).