MESON Chess Problem Database

Problem Display
PID: 721 (Q4R2/3b2p1/2R5/3kr2B/1p1rN3/3p2n1/5nNq/K5b1 w - - 0 1)

Gamage, Frederick

1st Prize, British Chess Magazine, 1943

Q4R2/3b2p1/2R5/3kr2B/1p1rN3/3p2n1/5nNq/K5b1

#2

7 + 11

3098 FIDE Album (1914-1944) (I) 1971
5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Bf3#
    • 1...Rc4
      • 2.Rd6#
    • 1...Re6
      • 2.Rc5#
    • 1...Be6
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc5#
      • 2.Rc7#
      • 2.Rcc8#
    • 1...Sfxe4
      • 2.Sf4#
    • 1...Sgxe4
      • 2.Se3#
    • 1...b3
      • 2.Sc3#
    • 1...g5
      • 2.Sf6#
    • 1...g6
      • 2.Sf6#
  • Tries
    • 1.Bf7+?
      • 1...Re6
        • 2.Rc5#
      • 1...Be6
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc5#
        • 2.Rc7#
        • 2.Rcc8#
      • 1...Kxe4!
    • 1.Rc1+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Ke6!
    • 1.Rc2+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Ke6!
    • 1.Rc3+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Ke6!
    • 1.Ra6+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Kc4!
    • 1.Rb6+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Kc4!
    • 1.Rcf6+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Kc4!
    • 1.Rg6+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Kc4!
    • 1.Rh6+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Kc4!
    • 1.Rc7+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Ke6!
    • 1.Rcc8+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Ke6!
    • 1.Qa5+?
      • 1...Kxe4
        • 2.Bf3#
        • 2.Rf4#
      • 1...Kxc6!
  • Keys
    • 1.Rff6!
      • threat
        • 2.Rc5#
      • 1...Kxe4
        • 2.Bf3#
      • 1...Rdxe4
        • 2.Rfd6#
      • 1...Rexe4
        • 2.Qa5#
      • 1...Bxc6
        • 2.Qxc6#
      • 1...Sfxe4
        • 2.Sf4#
      • 1...Sgxe4
        • 2.Se3#
      • 1...gxf6
        • 2.Sxf6#
      • 1...Rc4
        • 2.Rcd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • K(h);OGATEB,S_FLIGHT,XS(C)::B(D)
    • R(g);SBLOCK::QAB(F)+R(E),DCHECK
    • R(i);SBLOCK::QAB(F)+R(E),DCHECK
    • S(b);SBLOCK,XS(C)::S(B)
    • S(e);SBLOCK,XS(C)::S(B)
    • P(f);N_GUARD::S(C)
    • P(k);N_GUARD::S(C)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • R(i);P_SPINR(i)::QAB(F)+R(E),DCHECK
      • Refutation
        • K(h);S_FLIGHT,XS(C)
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(h);S_FLIGHT,XR(E)
  • Actual
    • R(G);
    • Threat
      • QAB(F)+R(E),DCHECK
    • Vars
      • K(h);OGATEB,S_FLIGHT,XS(C)::B(D)
      • R(g);SBLOCK,XS(C)::R1(G)
      • R(i);SBLOCK,XS(C)::QAR(F)
      • B(j);OGATE,P_SPINB(j),XR(E)::QAB1(F),XB(j)
      • S(b);SBLOCK,XS(C)::S(B)
      • S(e);SBLOCK,XS(C)::S(B)
      • P(k);XR(G)::S(C),XP(k)
      • R(g);SBLOCK::QAB(F)+R(E),DCHECK
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