MESON Chess Problem Database

Problem Display
PID: 193778 (8/1P2K1p1/n6B/1bp1kp1r/1N3R2/4n2p/3P3q/6rQ w - - 0 1)

Simkhovich, Froim Markovich

1st Prize, Barcelona Ty., 1916

8/1P2K1p1/n6B/1bp1kp1r/1N3R2/4n2p/3P3q/6rQ

#2

7 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxa1#
    • 1...Rg2
      • 2.Qa1#
    • 1...Rg3
      • 2.Qa1#
    • 1...Rg4
      • 2.Qa1#
    • 1...Rg6
      • 2.Qa1#
    • 1...Bf1
      • 2.Sc6#
    • 1...Be2
      • 2.Sc6#
    • 1...Bd3
      • 2.Sxd3#
      • 2.Sc6#
    • 1...Ba4
      • 2.Sd3#
    • 1...Bc4
      • 2.Sc6#
    • 1...Bc6
      • 2.Sd3#
      • 2.Sxc6#
    • 1...Bd7
      • 2.Sd3#
    • 1...Be8
      • 2.Sd3#
    • 1...Sd1
      • 2.Qd5#
    • 1...Sf1
      • 2.Qd5#
    • 1...Sc2
      • 2.Qd5#
    • 1...Sc4
      • 2.Sd3#
      • 2.Qd5#
    • 1...Sg4
      • 2.Qd5#
    • 1...Sd5+
      • 2.Qxd5#
    • 1...Sxb4
      • 2.b8Q#
      • 2.b8B#
    • 1...cxb4
      • 2.d4#
  • Tries
    • 1.b8Q+?
      • 1...Sc7
        • 2.Qxc7#
      • 1...Sxb8!
    • 1.b8B+?
      • 1...Sc7
        • 2.Bxc7#
      • 1...Sxb8!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Sd3#
      • 1...Sd5+
        • 2.Qxd5#
      • 1...Qxh1
        • 2.Bf4#
      • 1...Qxd2
        • 2.Bf4#
      • 1...Rxh1
        • 2.Bxg7#
      • 1...Bxc4
        • 2.Sc6#
      • 1...Sxc4
        • 2.Qd5#
      • 1...Sxb4
        • 2.b8Q#
        • 2.b8B#
      • 1...cxb4
        • 2.d4#
      • 1...f4
        • 2.Qe4#
      • 1...Qe2
        • 2.Bf4#
      • 1...Qg2
        • 2.Bf4#
      • 1...Rg2
        • 2.Qa1#
      • 1...Sg2
        • 2.Bxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 13
  • Sets
    • R(a);OGATE::QAB(A),XR(a)
    • R(a);OGATE::QAB(A)
    • B(e);N_GUARD::S(C)
    • S(c);N_GUARD::QAR1(A)
    • S(c);CHECK,N_GUARD::QAR1(A),XS(c)
    • S(j);N_GUARD,XS(C)::P=Q
    • P(f);N_GUARD,XS(C)::P(B)
  • Tries
    • Try
      • P(F);CHECK
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::QAB(F),XS(j)
      • Refutation
        • S(j);XQ(F)
    • Try
      • P(F);CHECK
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::B(F),XS(j)
      • Refutation
        • S(j);XB(F)
  • Actual
    • R(D);
    • Threat
      • S(C)
    • Vars
      • S(c);CHECK,N_GUARD::QAR1(A),XS(c)
      • Q(b);N_GUARD,XQ(A)::B(E)
      • Q(b);N_GUARD,XP(B)::B(E)
      • R(a);N_GUARD,XQ(A)::B(E),XP(k)
      • B(e);N_GUARD,XR(D)::S(C)
      • S(c);N_GUARD,XR(D)::QAR1(A)
      • S(j);N_GUARD,XS(C)::P=Q
      • P(f);N_GUARD,XS(C)::P(B)
      • P(h);N_GUARD::QAR1(A)
      • Q(b);N_GUARD::B(E)
      • R(a);OGATE::QAB(A)
      • S(c);S_CUTR(a)::B(E),XP(k)
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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).