MESON Chess Problem Database

Problem Display
PID: 263051 (1b3K2/3Rp2P/2pqPpN1/n1PN2QP/3k1p1r/4pB2/1n2P3/2R1B3 w - - 0 1)

Sorochan, Vladimir Mikhailovich

3rd Comm., SuperProblem, 2019

1b3K2/3Rp2P/2pqPpN1/n1PN2QP/3k1p1r/4pB2/1n2P3/2R1B3

#2

13 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.Sxc7#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Bc3#
      • 1...fxg5
        • 2.h8Q#
        • 2.h8B#
      • 1...Sd1
        • 2.Rxd1#
      • 1...Sa4
        • 2.Rd1#
      • 1...f5
        • 2.h8Q#
        • 2.h8B#
      • 1...Qd5!
    • 1.Sdxe7?
      • threat
        • 2.Qxf6#
      • 1...Qxd7
        • 2.Sf5#
      • 1...Rxh5
        • 2.Qxf4#
      • 1...fxg5
        • 2.h8Q#
        • 2.h8B#
      • 1...Qd5
        • 2.Sf5#
      • 1...Sbc4
        • 2.Bc3#
      • 1...Sac4
        • 2.Bc3#
      • 1...f5
        • 2.Qf6#
        • 2.h8Q#
        • 2.h8B#
      • 1...Sd3!
    • 1.Qxf6+?
      • 1...Qe5
        • 2.Sc7#
      • 1...exf6+!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sf5#
      • 1...Kxe3
        • 2.Qg1#
      • 1...fxe3
        • 2.Qxh4#
      • 1...Sbc4
        • 2.Sc2#
      • 1...Sac4
        • 2.Sc2#
      • 1...f5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(h);::R(K)+S(F),XQ(h)
  • Tries
    • Try
      • S(F);P_PINQ(h)
      • Threat
        • B(B)
      • Vars
        • P(i);XQ(G)::P=Q
        • S(a);N_GUARD::R(A),XS(a)
        • S(a);N_GUARD::R(A)
        • P(i);::P=Q
      • Refutation
        • Q(h);
    • Try
      • S(F);P_PINQ(h),P_SPINS(F),XP(j)
      • Threat
        • QAB(G),XP(i)
      • Vars
        • Q(h);N_PINS(F),N_SPINQ(h),XR(K)::S(F)
        • R(e);N_GUARD,XP(H)::QAR2(G),XP(d)
        • P(i);XQ(G)::P=Q
        • Q(h);N_PINS(F)::S(F)
        • S(a);SBLOCK::B(B)
        • S(f);SBLOCK::B(B)
      • Refutation
        • S(a);
    • Try
      • Q(G);CHECK,XP(i)
      • Vars
        • Q(h);P_SPINQ(h),S_CUTP(j)::R(K)+S(F)
      • Refutation
        • P(j);CHECK,XQ(G)
  • Actual
    • S(F);P_PINQ(h),XP(b)
    • Threat
      • S(F)
    • Vars
      • K(c);N_SPINQ(h),OGATEB,P_SPINP(d),S_FLIGHT,XS(F)::QAB(G)
      • P(d);OGATEB,SBLOCK,XS(F)::QAR(G),XR(e)
      • S(a);SBLOCK::S(F)
      • S(f);SBLOCK::S(F)
      • P(i);::S(F),XP(i)
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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).