MESON Chess Problem Database

Problem Display
PID: 263038 (BB2R3/K7/3p1Pp1/1RNNP1Pn/1P1k4/1P1p4/3Pb2p/5Qqn w - - 0 1)

Sorochan, Vladimir Mikhailovich

3rd Prize, SuperProblem, 2018

BB2R3/K7/3p1Pp1/1RNNP1Pn/1P1k4/1P1p4/3Pb2p/5Qqn

#2

14 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Qa1#
    • 1...Qe3
      • 2.Qa1#
      • 2.dxe3#
    • 1...Qg2
      • 2.Qa1#
    • 1...Qg3
      • 2.Qa1#
    • 1...Qg4
      • 2.Qa1#
    • 1...Qxg5
      • 2.Qa1#
    • 1...Bd1
      • 2.Qxd3#
    • 1...Bf3
      • 2.Qxd3#
    • 1...Bg4
      • 2.Qxd3#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sg7
      • 2.Qf4#
    • 1...dxe5
      • 2.Bxe5#
  • Tries
    • 1.Se6+?
      • 1...Kxe5+
        • 2.Se3#
      • 1...Ke4+!
    • 1.Sc3?
      • threat
        • 2.Se6#
      • 1...dxc5
        • 2.Rd8#
      • 1...Bg4
        • 2.Qxd3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...Qg4!
    • 1.Se3?
      • threat
        • 2.Se6#
      • 1...dxc5
        • 2.Rd8#
      • 1...Qg4
        • 2.Qa1#
      • 1...Bg4
        • 2.Qxd3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...d5!
    • 1.Sf4?
      • threat
        • 2.Sce6#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...dxc5
        • 2.Se6#
        • 2.Rd8#
      • 1...Qg4
        • 2.Qa1#
      • 1...Bg4
        • 2.Qxd3#
      • 1...d5
        • 2.Sfe6#
      • 1...Sg7!
    • 1.Sb6?
      • threat
        • 2.Se6#
      • 1...dxc5
        • 2.Rd8#
      • 1...Qg4
        • 2.Qa1#
      • 1...Bg4
        • 2.Qxd3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...d5!
    • 1.Se7?
      • threat
        • 2.Se6#
      • 1...Kxe5
        • 2.Sf5#
      • 1...dxc5
        • 2.Rd8#
      • 1...d5
        • 2.Sc6#
      • 1...Qg4
        • 2.Qa1#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...Bg4!
    • 1.Qc1?
      • threat
        • 2.Qb2#
        • 2.Qc3#
        • 2.Qc4#
      • 1...dxc5
        • 2.Qc4#
      • 1...Qxc1!
  • Keys
    • 1.Sc7!
      • threat
        • 2.S5e6#
      • 1...dxc5
        • 2.Se6#
      • 1...d5
        • 2.S7e6#
      • 1...Qg4
        • 2.Qa1#
      • 1...Bg4
        • 2.Qxd3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::QAB(A)
    • Q(a);N_GUARD,XP(I)::QAB(A)
    • B(c);OGATE::QAR1(A),XP(e)
    • S(g);N_GUARD::QAR2(A),XS(g)
    • S(g);N_GUARD::QAR2(A)
    • P(h);OGATE,XP(H)::B(M),XP(h)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);CHECK,P_SPINP(h),S_FLIGHT,XP(H)::R(E)+S(G)
      • Refutation
        • K(f);CHECK,P-FLIGHT
    • Try
      • S(G);
      • Threat
        • S(F)
      • Vars
        • P(h);OGATEB,XS(F)::R(N)
        • B(c);OGATE::QAR1(A),XP(e)
        • S(g);N_GUARD::QAR2(A),XS(g)
        • S(g);N_GUARD::QAR2(A)
      • Refutation
        • Q(a);
    • Try
      • S(G);
      • Threat
        • S(F)
      • Vars
        • P(h);OGATEB,XS(F)::R(N)
        • Q(a);N_GUARD::QAB(A)
        • B(c);OGATE::QAR1(A),XP(e)
        • S(g);N_GUARD::QAR2(A),XS(g)
        • S(g);N_GUARD::QAR2(A)
      • Refutation
        • P(h);
    • Try
      • S(G);
      • Threat
        • S(F)
      • Vars
        • S(g);OGATE,XS(G)::QAR2(A),XS(g)
        • Q(a);N_GUARD::QAB(A)
        • B(c);OGATE::QAR1(A),XP(e)
        • P(h);::S(G)
      • Refutation
        • S(g);
    • Try
      • S(G);
      • Threat
        • S(F)
      • Vars
        • P(h);OGATEB,XS(F)::R(N)
        • Q(a);N_GUARD::QAB(A)
        • B(c);OGATE::QAR1(A),XP(e)
        • S(g);N_GUARD::QAR2(A),XS(g)
        • S(g);N_GUARD::QAR2(A)
      • Refutation
        • P(h);
    • Try
      • S(G);
      • Threat
        • S(F)
      • Vars
        • K(f);P_PINS(F),P_SPINP(h),S_CUTP(i),S_FLIGHT,XP(H)::R(N)+S(G)
        • P(h);OGATEB,XS(F)::R(N)
        • P(h);SBLOCK::S(G)
        • Q(a);N_GUARD::QAB(A)
        • S(g);N_GUARD::QAR2(A),XS(g)
        • S(g);N_GUARD::QAR2(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(h);XS(F)::QAR1(A)
      • Refutation
        • Q(a);XQ(A)
  • Actual
    • S(G);
    • Threat
      • S(F)
    • Vars
      • P(h);XS(F)::S(G)
      • P(h);::S(G)
      • Q(a);N_GUARD::QAB(A)
      • B(c);OGATE::QAR1(A),XP(e)
      • S(g);N_GUARD::QAR2(A),XS(g)
      • S(g);N_GUARD::QAR2(A)
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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).