MESON Chess Problem Database

Problem Display
PID: 193839 (3R3b/2N5/K1N1R2B/1BkP4/p4r2/1n5Q/2b1n3/5r2 w - - 0 1)

Rothstein, Louis

2nd Prize, Pittsburgh Gazette-Times, 1916

3R3b/2N5/K1N1R2B/1BkP4/p4r2/1n5Q/2b1n3/5r2

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Bf8#
    • 1...Sed4
      • 2.Qc3#
    • 1...Sbd4
      • 2.Qa3#
  • Tries
    • 1.Rxe2?
      • threat
        • 2.Se6#
      • 1...Rf6
        • 2.Rxc2#
        • 2.Qc3#
      • 1...Bf5
        • 2.Bf8#
      • 1...Sd4
        • 2.Qa3#
        • 2.Qc3#
      • 1...Re4!
    • 1.Re4?
      • threat
        • 2.Se6#
      • 1...Rf6
        • 2.Rc4#
      • 1...Sed4
        • 2.Qc3#
      • 1...Sbd4
        • 2.Qa3#
      • 1...Rxe4!
  • Keys
    • 1.Re5!
      • threat
        • 2.Se6#
      • 1...Rf6
        • 2.d6#
      • 1...Bf5
        • 2.Bf8#
      • 1...Sed4
        • 2.Qc3#
      • 1...Sbd4
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(b);S_CUTR(f)::B(G)
    • S(c);N_GUARD,S_CUTB(h),S_CUTR(f)::QAR2(A)
    • S(d);OGATE::QAB(A)
  • Tries
    • Try
      • R(F);XS(c)
      • Threat
        • S(H)
      • Vars
        • B(b);S_CUTR(f)::B(G)
      • Refutation
        • R(f);
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • R(f);N_GUARD,P_PINS(E)::R1(F)
        • S(c);N_GUARD,S_CUTB(h)::QAR2(A)
        • S(d);OGATE::QAB(A)
      • Refutation
        • R(f);XR(F)
  • Actual
    • R(F);
    • Threat
      • S(H)
    • Vars
      • R(f);P_PINS(E),S_CUTB(h)::R(F)+P(C)
      • B(b);S_CUTR(f)::B(G)
      • S(c);N_GUARD,S_CUTR(f)::QAR2(A)
      • S(d);OGATE::QAB(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).