MESON Chess Problem Database

Problem Display
PID: 72415 (8/B2K3p/p2RN3/3p3Q/3Nkp2/r3n2b/qp2Bn1b/8 w - - 0 1)

Gamage, Frederick

The Chess Review, 1941

8/B2K3p/p2RN3/3p3Q/3Nkp2/r3n2b/qp2Bn1b/8

#2

7 + 12

5397 Frederick Gamage (Prcic) 2004
133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Bf3#
    • 1...Bxe6+
      • 2.Rxe6#
    • 1...Sd3
      • 2.Bf3#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sd2#
        • 2.Qe5#
      • 1...Bxe6+
        • 2.Rxe6#
      • 1...b1Q
        • 2.Qe5#
      • 1...b1S
        • 2.Qe5#
      • 1...b1B
        • 2.Qe5#
      • 1...b1R
        • 2.Qe5#
      • 1...Rd3
        • 2.Qe5#
      • 1...Sd3
        • 2.Sd2#
      • 1...Sfg4
        • 2.Sd2#
        • 2.Sc5#
      • 1...Sf1
        • 2.Qe5#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Seg4
        • 2.Sd2#
        • 2.Qxh7#
      • 1...Sf5
        • 2.Seg5#
      • 1...Bf5!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qe5#
      • 1...Bxe6+
        • 2.Rxe6#
      • 1...Bf5
        • 2.Qf3#
      • 1...Sd3
        • 2.Bf3#
      • 1...Sfg4
        • 2.Sc5#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Seg4
        • 2.Qxh7#
      • 1...Sf5
        • 2.Sg5#
      • 1...f3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(e);SBLOCK::B(A)
    • B(g);CHECK,OGATE,XS(E)::R(D),XB(g)
    • S(c);SBLOCK::B(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);CHECK,OGATE,XS(E)::R(D),XB(g)
        • P(b);::QAR1(C)
        • R(e);::QAR1(C)
        • S(c);::S(B)
        • S(f);::QAR1(C)
        • S(f);N_GUARD,S_CUTQ(a)::QAB1(C),XP(j)
        • S(f);N_PINS(E),SBLOCK::S(E)
      • Refutation
        • B(g);
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • B(g);CHECK,OGATE,XS(E)::R(D),XB(g)
      • B(g);SBLOCK::QAB1(C)
      • S(c);SBLOCK::B(A)
      • S(c);N_PINS(E)::S(E)
      • S(f);N_GUARD,S_CUTQ(a)::QAB1(C),XP(j)
      • S(f);N_GUARD,N_PINS(E),S_CUTB(g)::QAB(C),XP(l)
      • S(f);N_PINS(E),SBLOCK::S(E)
      • P(i);::QAB1(C),XP(i)
HTML5 logo

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).