MESON Chess Problem Database

Problem Display
PID: 11309 (1B3RQK/3B4/4N3/6np/bR1n2kq/1p3p1r/2rNp2p/b7 w - - 0 1)

Gamage, Frederick

1st Prize, CCLA (Cross Check Ty.), 1938

1B3RQK/3B4/4N3/6np/bR1n2kq/1p3p1r/2rNp2p/b7

#2

8 + 13

5062 111 Selected Problems by Famous Composers 1945
5088 How to Solve Chess Problems 1945
459 Nebraska Chess Bulletin 1950
5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qxg5#
    • 1...Qf2
      • 2.Qxg5#
    • 1...Qg3
      • 2.Qxg5#
    • 1...Rb2
      • 2.Rxd4#
    • 1...Rc3
      • 2.Rxd4#
    • 1...b2
      • 2.Rxd4#
  • Keys
    • 1.Se4!
      • threat
        • 2.Rf4#
      • 1...Sb5+
        • 2.Sd4#
      • 1...Sf5+
        • 2.Sf6#
      • 1...Sc6+
        • 2.Sd4#
      • 1...Sxe6+
        • 2.Sc3#
      • 1...Qg3
        • 2.Qxg5#
      • 1...Rg3
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(k);N_GUARD::QAR1(G),XS(l)
    • R(b);S_CUTB(a)::R(B),XS(i)
    • P(e);S_CUTB(a)::R(B),XS(i)
  • Actual
    • S(A);N_PINS(i),P_PINS(l)
    • Threat
      • R1(F)
    • Vars
      • S(i);CHECK,S_CUTB(h)::B(D)+S(C)
      • S(i);CHECK,SBLOCK::R(B)+S(A),DCHECK
      • S(i);CHECK,XS(C)::R(B)+S(A)
      • Q(k);N_GUARD::QAR1(G),XS(l)
      • R(g);S_CUTQ(k)::S(A)
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