MESON Chess Problem Database

Problem Display
PID: 199820 (qn2RB1K/2N3p1/8/p7/3k4/NR3B2/6rp/5b1Q w - - 0 1)

Moen, Kabe

Die Schwalbe, 2019

qn2RB1K/2N3p1/8/p7/3k4/NR3B2/6rp/5b1Q

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qa6
      • 2.Re4#
    • 1...Qa7
      • 2.Re4#
    • 1...Re2
      • 2.Scb5#
    • 1...Be2
      • 2.Qa1#
    • 1...Bb5
      • 2.Scxb5#
    • 1...Sc6
      • 2.Re4#
  • Tries
    • 1.Sab5+?
      • 1...Kc4
        • 2.Rc3#
      • 1...Bxb5!
  • Keys
    • 1.Be2!
      • threat
        • 2.Sc2#
        • 2.Sab5#
        • 2.Rd3#
      • 1...Rxe2
        • 2.Scb5#
      • 1...Bxe2
        • 2.Qa1#
      • 1...Qf3
        • 2.Sc2#
        • 2.Sab5#
      • 1...Qe4
        • 2.Sab5#
      • 1...Qd5
        • 2.Sc2#
        • 2.Rd3#
      • 1...Qc6
        • 2.Rd3#
      • 1...Qb7
        • 2.Sc2#
        • 2.Rd3#
      • 1...Qa6
        • 2.Sc2#
      • 1...Rg3
        • 2.Sc2#
        • 2.Sab5#
        • 2.Scb5#
      • 1...Rg5
        • 2.Sc2#
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::R1(F),XQ(g)
    • Q(g);N_GUARD::R1(F)
    • R(b);S_CUTB(a)::S(E)
    • B(a);OGATE::QAB(A)
    • B(a);N_GUARD::S(E),XB(a)
    • S(h);S_CUTQ(g)::R1(F)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(C)
      • Refutation
        • B(a);XS(B)
  • Actual
    • B(D);
    • Threat
      • DUALS(3)
    • Vars
      • R(b);XB(D)::S(E)
      • B(a);OGATE,XB(D)::QAB(A)
      • Q(g);::S(B)
      • Q(g);::R1(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).