MESON Chess Problem Database

Problem Display
PID: 11542 (3R4/7B/7K/8/bQ3N2/2PN4/P1kppP2/2B1rn2 w - - 0 1)

Gamage, Frederick

1st Prize, The Chess Review, 1939

3R4/7B/7K/8/bQ3N2/2PN4/P1kppP2/2B1rn2

#2

10 + 6

5064 100 Years of the American Two-move Chess Problem 1962
3098 FIDE Album (1914-1944) (I) 1971
145 StrateGems 1998
5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qxa4#
    • 1...Rxc1
      • 2.Sb2#
    • 1...Rd1
      • 2.Qb2#
    • 1...Bb3
      • 2.Qxb3#
    • 1...Bb5
      • 2.Qb3#
    • 1...Bc6
      • 2.Qb3#
    • 1...Bd7
      • 2.Qb3#
    • 1...Be8
      • 2.Qb3#
    • 1...dxc1Q
      • 2.Sxe1#
      • 2.Sb2#
      • 2.Sc5#
      • 2.Se5#
    • 1...dxc1S
      • 2.Sxe1#
    • 1...dxc1B
      • 2.Sxe1#
      • 2.Sb2#
      • 2.Sc5#
      • 2.Se5#
    • 1...dxc1R
      • 2.Sxe1#
      • 2.Sb2#
      • 2.Sc5#
      • 2.Se5#
    • 1...d1Q
      • 2.Qb2#
    • 1...d1B
      • 2.Qb2#
    • 1...d1R
      • 2.Qb2#
  • Tries
    • 1.Sxe1+?
      • 1...Kxc1
        • 2.Qb1#
      • 1...Kd1!
    • 1.Sc5+?
      • 1...Kxc1
        • 2.Qb1#
      • 1...Kd1!
    • 1.Se5+?
      • 1...Kxc1
        • 2.Qb1#
      • 1...Kd1!
    • 1.Qxa4+?
      • 1...Kxc3
        • 2.Sd5#
        • 2.Bb2#
        • 2.Rc8#
        • 2.Qb3#
        • 2.Qc6#
      • 1...Kb1!
  • Keys
    • 1.Sg2!
      • 1...dxc1Q+
        • 2.Sdf4#
      • 1...dxc1B+
        • 2.Sdf4#
      • 1...Kd1
        • 2.Qxa4#
      • 1...Rxc1
        • 2.Sb2#
      • 1...dxc1S
        • 2.Sdxe1#
      • 1...dxc1R
        • 2.Sdxe1#
        • 2.Sb2#
        • 2.Sdf4#
        • 2.Sc5#
        • 2.Se5#
      • 1...Bb3
        • 2.Qxb3#
      • 1...d1Q
        • 2.Qb2#
      • 1...d1S
        • 2.Sgxe1#
      • 1...d1B
        • 2.Sgxe1#
        • 2.Qb2#
      • 1...d1R
        • 2.Qb2#
      • 1...Rd1
        • 2.Qb2#
      • 1...Bb5
        • 2.Qb3#
      • 1...Bc6
        • 2.Qb3#
      • 1...Bd7
        • 2.Qb3#
      • 1...Be8
        • 2.Qb3#
      • 1...Sh2
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sg3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(c);S_FLIGHT::QAB(F),XB(f)
    • R(a);SBLOCK,XB(A)::B(I)+S(E)
    • R(a);SBLOCK::QAR1(F)
    • B(f);N_GUARD::QAB1(F),XB(f)
    • B(f);N_GUARD::QAB1(F)
    • P(d);SBLOCK,XB(A)::B(I)+S(E),DCHECK,XR(a)
    • P(d);SBLOCK::QAR1(F)
  • Tries
    • Try
      • S(E);CHECK,XR(a)
      • Vars
        • K(c);P-FLIGHT,XB(A)::QAR1(F)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT,XB(A)::QAR1(F)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT,XB(A)::QAR1(F)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • Q(F);CHECK,XB(f)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(G);
    • Vars
      • P(d);CHECK,SBLOCK,XB(A)::B(I)+S(E)
      • K(c);S_FLIGHT::QAB(F),XB(f)
      • R(a);SBLOCK,XB(A)::B(I)+S(E)
      • P(d);SBLOCK,XB(A)::B(I)+S(E),DCHECK,XR(a)
      • B(f);N_GUARD::QAB1(F),XB(f)
      • P(d);SBLOCK::QAR1(F)
      • P(d);N_GUARD,SBLOCK::S(G),XR(a)
      • R(a);SBLOCK::QAR1(F)
      • B(f);N_GUARD::QAB1(F)
      • S(b);N_GUARD::S(G)
      • S(b);N_GUARD::S(G),XS(b)
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