MESON Chess Problem Database

Problem Display
PID: 74457 (4R3/BP6/pKN3N1/1B1P1p2/4b3/2p1knbR/r2p4/3qnQ2 w - - 0 1)

Gamage, Frederick

Christian Science Monitor, 1942

4R3/BP6/pKN3N1/1B1P1p2/4b3/2p1knbR/r2p4/3qnQ2

#2

10 + 11

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Qe2#
    • 1...Qe2
      • 2.Qxe2#
    • 1...Qb3
      • 2.Qe2#
    • 1...Qa4
      • 2.Qe2#
    • 1...Qa1
      • 2.Qe2#
    • 1...Qb1
      • 2.Qe2#
    • 1...Qc1
      • 2.Qe2#
    • 1...Bf2
      • 2.Kc7#
    • 1...Bf4
      • 2.Qg1#
    • 1...Bh4
      • 2.Kc7#
    • 1...Be5
      • 2.Qg1#
    • 1...Bd6
      • 2.Qg1#
    • 1...Bc7+
      • 2.Kxc7#
    • 1...Bb8
      • 2.Qg1#
    • 1...Sg1
      • 2.Qf4#
    • 1...Sh2
      • 2.Qf4#
    • 1...Sd4
      • 2.Qf4#
    • 1...Sh4
      • 2.Qf4#
    • 1...Se5
      • 2.Kc7#
      • 2.Qf4#
    • 1...Sg5
      • 2.Qf4#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sxf5#
      • 1...Kxd4
        • 2.Kc6#
      • 1...Sxd4
        • 2.Qf4#
      • 1...Be5
        • 2.Qg1#
      • 1...Sh4
        • 2.Qg1#
      • 1...Se5
        • 2.Qg1#
      • 1...f4
        • 2.Sf5#
      • 1...Bc7+!
    • 1.Qg1+?
      • 1...Bf2
        • 2.Kc7#
      • 1...Sxg1!
    • 1.Qf2+?
      • 1...Bxf2
        • 2.Kc7#
      • 1...Kxf2!
  • Keys
    • 1.Sce7!
      • threat
        • 2.Sxf5#
      • 1...Bc7+
        • 2.Kxc7#
      • 1...Kd4
        • 2.Kc6#
      • 1...Be5
        • 2.Qg1#
      • 1...Sd4
        • 2.Qf4#
      • 1...Sh4
        • 2.Kc6#
      • 1...Se5
        • 2.Kc7#
      • 1...f4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 15
  • Sets
    • Q(a);N_GUARD::QAR1(A)
    • Q(a);N_GUARD::QAR1(A),XQ(a)
    • Q(a);N_GUARD,P_PINB(C)::QAR1(A)
    • B(h);P_SPINS(g)::B(H)+K(E)
    • B(h);N_GUARD,P_SPINS(g)::QAB(A)
    • B(h);N_GUARD,N_SPINB(i),P_SPINS(g)::QAB(A)
    • B(h);CHECK,P_SPINS(g)::B(H)+K(E),XB(h)
    • S(g);N_SPINB(i),OGATE,P_SPINB(h)::QAB1(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F),XP(j)
      • Vars
        • K(f);N_SPINB(i),S_FLIGHT,XS(F)::B(H)+K(E)
        • S(g);N_SPINB(i),OGATE,P_SPINB(h),SBLOCK,XS(F)::QAB1(A)
        • B(h);N_GUARD,N_SPINB(i),P_SPINS(g)::QAB(A)
        • S(g);N_GUARD,N_SPINB(i),P_SPINB(h)::QAB(A)
        • P(j);::S(F)
      • Refutation
        • B(h);CHECK,P_SPINS(g)
    • Try
      • Q(A);CHECK
      • Vars
        • B(h);N_SPINB(i),P_SPINB(h),P_SPINS(g)::B(H)+K(E)
      • Refutation
        • S(g);N_SPINB(i),P_SPINB(h),XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • B(h);P_SPINS(g),SBLOCK,XQ(A)::B(H)+K(E)
      • Refutation
        • K(f);N_SPINB(i),S_FLIGHT,XQ(A)
  • Actual
    • S(F);N_PINB(i)
    • Threat
      • S(F),XP(j)
    • Vars
      • B(h);CHECK,P_SPINS(g)::B(H)+K(E),XB(h)
      • K(f);S_FLIGHT::B(H)+K(E)
      • B(h);N_GUARD,P_SPINS(g)::QAB(A)
      • S(g);OGATE,P_SPINB(h),SBLOCK::QAB1(A)
      • S(g);N_GUARD,P_SPINB(h)::B(H)+K(E)
      • S(g);P_SPINB(h)::B(H)+K(E)
      • P(j);::S(F)
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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).