MESON Chess Problem Database

Problem Display
PID: 275939 (1n1N4/1R6/1p1kBKb1/8/1P3P1p/2p2NB1/3q4/2bR4 w - - 0 1)

Bondarenko, Filip Semenovich

To Mat, 1961

1n1N4/1R6/1p1kBKb1/8/1P3P1p/2p2NB1/3q4/2bR4

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4+
      • 2.Rxd4#
    • 1...Qd5
      • 2.Rxd5#
    • 1...Sa6
      • 2.Rd7#
    • 1...Sc6
      • 2.Rd7#
    • 1...Sd7+
      • 2.Rxd7#
    • 1...h3
      • 2.f5#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sc4#
      • 1...Sd7+
        • 2.Rxd7#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Bd3
        • 2.Sef7#
        • 2.Sdf7#
      • 1...b5!
    • 1.Rxb6+?
      • 1...Sc6
        • 2.Rxc6#
      • 1...Kc7!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sb5#
      • 1...Qxf4+
        • 2.Sf5#
      • 1...Qxd4+
        • 2.Rxd4#
      • 1...Sd7+
        • 2.Rxd7#
      • 1...Bd3
        • 2.Sf7#
      • 1...Be8
        • 2.Sf5#
      • 1...b5
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(b);CHECK,OGATE::R(A),XQ(b)
    • Q(b);OGATE::R1(A),XQ(b)
    • S(h);N_GUARD::R1(H)
    • S(h);CHECK,N_GUARD::R1(H),XS(h)
    • P(d);N_GUARD::B(C)+P(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(h);CHECK,N_GUARD::R1(H),XS(h)
        • Q(b);OGATE,P_PINS(B)::R(A),XQ(b)
      • Refutation
        • P(e);
    • Try
      • R(H);CHECK,XP(e)
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::R1(H),XS(h)
      • Refutation
        • K(f);N_SPINQ(b),S_FLIGHT
  • Actual
    • S(B);N_PINQ(b)
    • Threat
      • S(B)
    • Vars
      • Q(b);CHECK,P_SPINQ(b),XP(E)::R(A)+S(B),DCHECK
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(B)::R(A),XQ(b)
      • S(h);CHECK,N_GUARD::R1(H),XS(h)
      • B(g);N_GUARD::S(I)
      • B(g);N_GUARD::S(B)
      • P(e);::S(B),XP(e)
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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).