MESON Chess Problem Database

Problem Display
PID: 251150 (2r2r2/1N4p1/p1P1p3/1PR1RP2/3k1P2/1p1b4/1p2P1KP/2nQ1Nbn w - - 0 1)

Novitski, Petr Adrinovich

Uralski Problemist, 2012

2r2r2/1N4p1/p1P1p3/1PR1RP2/3k1P2/1p1b4/1p2P1KP/2nQ1Nbn

#2

12 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bxh2
      • 2.e3#
    • 1...Sa2
      • 2.Qxd3#
    • 1...Sf2
      • 2.e3#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Re4#
      • 1...exf5
        • 2.Red5#
      • 1...Sf2
        • 2.e3#
      • 1...Sg3!
    • 1.Sg3?
      • threat
        • 2.Re4#
      • 1...Sxg3
        • 2.Qxg1#
      • 1...Sf2
        • 2.e3#
      • 1...exf5!
    • 1.Sa5?
      • threat
        • 2.Rc4#
      • 1...Rxc6
        • 2.Sxc6#
      • 1...axb5!
    • 1.Sd6?
      • threat
        • 2.Rc4#
      • 1...axb5
        • 2.Sxb5#
      • 1...Rxc6!
    • 1.exd3?
      • threat
        • 2.Rc4#
        • 2.Re4#
      • 1...Rxc6
        • 2.Re4#
      • 1...axb5
        • 2.Re4#
      • 1...exf5
        • 2.Rc4#
        • 2.Red5#
      • 1...Sf2
        • 2.Rc4#
      • 1...Sg3
        • 2.Rc4#
      • 1...Sxd3!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sf3#
      • 1...Be4+
        • 2.Rxe4#
      • 1...Bc4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD,XP(E)::P(C)
    • S(a);N_GUARD::QAR1(A),XB(f)
    • S(c);S_CUTB(b)::P(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • R1(I)
      • Vars
        • P(i);N_GUARD,XP(J)::R1(I)
        • S(c);S_CUTB(b)::P(C)
      • Refutation
        • S(c);
    • Try
      • S(B);
      • Threat
        • R1(I)
      • Vars
        • S(c);N_GUARD,XS(B)::QAB(A),XB(b)
        • S(c);S_CUTB(b)::P(C)
      • Refutation
        • P(i);XP(J)
    • Try
      • S(L);
      • Threat
        • R1(H)
      • Vars
        • R(k);XP(K)::S(L),XR(k)
      • Refutation
        • P(h);XP(G)
    • Try
      • S(L);
      • Threat
        • R1(H)
      • Vars
        • P(h);XP(G)::S(L),XP(h)
      • Refutation
        • R(k);XP(K)
    • Try
      • P(C);XB(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(k);XP(K)::R1(I)
        • P(h);XP(G)::R1(I)
        • S(c);::R1(H)
      • Refutation
        • S(a);P_SPINS(a),XP(C)
  • Actual
    • S(B);N_PINB(f)
    • Threat
      • S(B)
    • Vars
      • B(f);CHECK,N_GUARD::R1(I),XB(f)
      • B(f);N_GUARD::R1(H),XB(f)
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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).