MESON Chess Problem Database

Problem Display
PID: 265554 (8/2B5/1Q6/6p1/3rp2N/4k1P1/6R1/4Kb2 w - - 0 1)

Bazhan, Anastasia

Kudesnik, 2022

8/2B5/1Q6/6p1/3rp2N/4k1P1/6R1/4Kb2

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb3#
  • Tries
    • 1.Sf5+?
      • 1...Kd3
        • 2.Qxd4#
        • 2.Qb3#
      • 1...Kf3!
    • 1.Bf4+?
      • 1...Kd3
        • 2.Qb3#
      • 1...gxf4!
    • 1.Be5?
      • threat
        • 2.Qxd4#
      • 1...Kd3
        • 2.Qxd4#
        • 2.Qb3#
      • 1...gxh4!
    • 1.Re2+?
      • 1...Kd3
        • 2.Qb3#
      • 1...Bxe2!
  • Keys
    • 1.Qb3+!
      • 1...Rd3
        • 2.Bb6#
      • 1...Bd3
        • 2.Re2#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINR(c),P-FLIGHT,S_CUTB(a),S_CUTR(c)::QAR2(E)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);N_SPINR(c),P-FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • K(b);N_SPINR(c),P-FLIGHT::QAR2(E)
      • Refutation
        • P(e);XB(F)
    • Try
      • B(F);
      • Threat
        • QAB1(E),XR(c)
      • Refutation
        • P(e);XS(D)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);N_SPINR(c),P-FLIGHT::QAR2(E)
      • Refutation
        • B(a);XR(B)
  • Actual
    • Q(E);CHECK,N_PINR(c)
    • Vars
      • R(c);P_SPINR(c),S_CUTB(a)::B(F)
      • B(a);P_SPINB(a)::R1(B)
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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).