MESON Chess Problem Database

Problem Display
PID: 61238 (8/4BK1Q/R1P2P1b/P2k3r/Np2R1p1/1n2p3/BN1r4/2n5 w - - 0 1)

Dyachuk, Vasyl Vasilovich

3rd Prize, StrateGems, 2005

8/4BK1Q/R1P2P1b/P2k3r/Np2R1p1/1n2p3/BN1r4/2n5

#2

11 + 9

145 StrateGems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qf5#
    • 1...Rh2
      • 2.Qf5#
    • 1...Rh3
      • 2.Qf5#
    • 1...Rh4
      • 2.Qf5#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Bg5
      • 2.Qf5#
    • 1...Se2
      • 2.Bxb3#
    • 1...Sd3
      • 2.Bxb3#
  • Tries
    • 1.Rc4?
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Rd4
        • 2.Rc5#
      • 1...Re5
        • 2.Sb6#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Sd4
        • 2.Rc5#
      • 1...Sc5!
    • 1.Re6?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Rd4
        • 2.Sb6#
      • 1...Re5
        • 2.Rd6#
      • 1...Rf5!
    • 1.c7?
      • threat
        • 2.Rd6#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Bf4!
  • Keys
    • 1.Rxb4!
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Rd4
        • 2.Rb5#
      • 1...Re5
        • 2.Sc3#
      • 1...Rf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD::QAR2(K)
    • R(h);N_GUARD,P_PINP(H)::QAR2(K),XR(h)
    • B(i);S_CUTR(h)::QAR2(K)
    • S(a);N_GUARD::B(A),XS(c)
  • Tries
    • Try
      • R(D);N_PINS(c)
      • Threat
        • QAB1(K)
      • Vars
        • K(g);P-FLIGHT::QAR1(K)
        • R(b);SBLOCK::R1(D)
        • R(h);SBLOCK::S(C)
        • R(h);N_GUARD,P_PINP(H)::QAR2(K),XR(h)
        • S(c);SBLOCK::B(A)+R(D),DCHECK
      • Refutation
        • S(c);
    • Try
      • R(D);
      • Threat
        • QAB1(K)
      • Vars
        • K(g);N_SPINS(c),P-FLIGHT::QAR1(K)
        • R(b);SBLOCK::S(C)
        • R(h);SBLOCK::R1(D)
      • Refutation
        • R(h);P_PINP(H)
    • Try
      • P(G);
      • Threat
        • R1(F)
      • Vars
        • R(h);N_GUARD,P_PINP(H)::QAR2(K),XR(h)
      • Refutation
        • B(i);
  • Actual
    • R(D);XP(e)
    • Threat
      • QAB1(K)
    • Vars
      • K(g);N_SPINS(c),P-FLIGHT::QAR1(K)
      • R(b);SBLOCK::R(D)
      • R(h);SBLOCK::S(C)
      • R(h);N_GUARD,P_PINP(H)::QAR2(K),XR(h)
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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).