MESON Chess Problem Database

Problem Display
PID: 165475 (2R1R1r1/1p1p1B2/3k1B2/3pp3/1K2p2b/2n5/p3p2q/rbQn4 w - - 0 1)

Samilo, Volodimir Grigorovich

The Problemist, 2017

2R1R1r1/1p1p1B2/3k1B2/3pp3/1K2p2b/2n5/p3p2q/rbQn4

#2

6 + 15

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Bxe5#
    • 1...Qh1
      • 2.Bxe5#
    • 1...Qf2
      • 2.Bxe5#
    • 1...Qg2
      • 2.Bxe5#
    • 1...Qh3
      • 2.Bxe5#
    • 1...Rg3
      • 2.Bxe5#
    • 1...Rg5
      • 2.Be7#
    • 1...Be1
      • 2.Be7#
    • 1...Bf2
      • 2.Be7#
    • 1...Bg3
      • 2.Be7#
    • 1...Sa4
      • 2.Qc7#
    • 1...Sb5
      • 2.Qc5#
  • Tries
    • 1.Qh6?
      • threat
        • 2.Bxe5#
        • 2.Be7#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Rg6
        • 2.Qf8#
      • 1...Rxe8!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Kb3#
        • 2.Ka5#
      • 1...Qg1
        • 2.Bxe5#
      • 1...Qf2
        • 2.Bxe5#
      • 1...Bc2
        • 2.Ka5#
      • 1...Bf2
        • 2.Be7#
      • 1...Sa4
        • 2.Kxa4#
      • 1...Sb5
        • 2.Kxb5#
      • 1...b5
        • 2.Qa6#
      • 1...b6
        • 2.Kb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(f);N_GUARD::B(C),XP(k)
    • R(o);S_CUTQ(f)::B(C),XP(k)
    • R(o);S_CUTB(i)::B(C)
    • B(i);N_GUARD::B(C)
    • S(g);OGATE::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);OGATE,P_SPINB(i),XB(C)::QAR2(A),XB(i)
        • R(o);N_GUARD::QAB(A)
      • Refutation
        • R(o);XR(F)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • Q(f);N_GUARD::B(C),XP(k)
      • B(b);::QAB(A)+K(B)
      • B(i);N_GUARD::B(C)
      • S(g);::QAB(A)+K(B),XS(g)
      • P(m);N_GUARD::QAR(A)
      • P(m);::QAB(A)+K(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).