MESON Chess Problem Database

Problem Display
PID: 193806 (5Bb1/3BN3/6p1/N1r5/3kPP2/7R/2p4p/2K1Q1bn w - - 0 1)

Promislo, Charles

1st Prize=, Rice MT, 1916

5Bb1/3BN3/6p1/N1r5/3kPP2/7R/2p4p/2K1Q1bn

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sb3#
    • 1...Rb5
      • 2.Sec6#
    • 1...Rd5
      • 2.Sec6#
      • 2.Qb4#
    • 1...Re5
      • 2.Sec6#
    • 1...Rf5
      • 2.Sec6#
    • 1...Rg5
      • 2.Sec6#
    • 1...Rh5
      • 2.Sec6#
    • 1...Rc6
      • 2.Sexc6#
    • 1...Be3+
      • 2.Qxe3#
    • 1...Bd5
      • 2.Bg7#
    • 1...Sf2
      • 2.Qe3#
  • Tries
    • 1.Sb3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Bxb3!
    • 1.Sac6+?
      • 1...Kc4
        • 2.Qb4#
        • 2.Qf1#
        • 2.Qe2#
      • 1...Rxc6!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Qd2#
      • 1...Be3+
        • 2.Qxe3#
      • 1...Rxa5
        • 2.Qc3#
      • 1...Rxc6
        • 2.Sexc6#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Rc4
        • 2.Sb3#
      • 1...Rb5
        • 2.Qc3#
      • 1...Rd5
        • 2.Qb4#
      • 1...Re5
        • 2.Qc3#
      • 1...Rf5
        • 2.Qc3#
      • 1...Rg5
        • 2.Qc3#
      • 1...Rh5
        • 2.Qc3#
      • 1...Bc4
        • 2.Qc3#
      • 1...Bd5
        • 2.Bg7#
      • 1...Sf2
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK,S_CUTB(h)::S(F)
    • R(f);N_GUARD::S(H)
    • R(f);N_GUARD::S(H),XR(f)
    • B(a);CHECK,N_GUARD::QAB1(B),XB(a)
    • B(h);S_CUTR(f)::B(I)
    • S(b);S_CUTB(a)::QAB1(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(B)
      • Refutation
        • B(h);XS(F)
    • Try
      • S(F);CHECK
      • Refutation
        • R(f);XS(F)
  • Actual
    • B(G);
    • Threat
      • QAR2(B)
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(B),XB(a)
      • R(f);N_GUARD,XS(F)::QAB1(B)
      • R(f);XB(G)::S(H),XR(f)
      • R(f);N_GUARD::QAB1(B),XR(f)
      • R(f);SBLOCK,S_CUTB(h)::S(F)
      • R(f);N_GUARD::QAB1(B)
      • R(f);N_GUARD,S_CUTB(h)::QAR2(B)
      • B(h);S_CUTR(f)::QAB1(B)
      • B(h);S_CUTR(f)::B(I)
      • S(b);S_CUTB(a)::QAB1(B)
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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).