MESON Chess Problem Database

Problem Display
PID: 74426 (1BK5/4p3/Np2P3/1pQn1P2/1P2k2N/8/R1qRn3/1B1b4 w - - 0 1)

Gamage, Frederick

1st Prize, BCPS, 1941-1942

1BK5/4p3/Np2P3/1pQn1P2/1P2k2N/8/R1qRn3/1B1b4

#2

11 + 8

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Bxd3#
    • 1...Sec3
      • 2.Qd4#
    • 1...Sdc3
      • 2.Qe5#
  • Tries
    • 1.Raxc2?
      • threat
        • 2.Rc4#
      • 1...Bxc2
        • 2.Bxc2#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sec3
        • 2.Qd4#
      • 1...Sdc3
        • 2.Qe5#
      • 1...bxc5!
    • 1.Rdxc2?
      • threat
        • 2.Rxe2#
        • 2.Rc4#
      • 1...Kd3
        • 2.Rd2#
        • 2.Rc3#
      • 1...Bxc2
        • 2.Bxc2#
      • 1...Sd4
        • 2.Re2#
      • 1...Sc7
        • 2.Rc4#
      • 1...Sc1
        • 2.Re2#
        • 2.Rc4#
      • 1...Sg1
        • 2.Re2#
        • 2.Rc4#
      • 1...Sec3
        • 2.Re2#
      • 1...Sg3
        • 2.Re2#
        • 2.Rc4#
      • 1...Sef4
        • 2.Re2#
        • 2.Rc4#
      • 1...Sdc3
        • 2.Rxe2#
      • 1...Se3
        • 2.Rc4#
      • 1...bxc5!
  • Keys
    • 1.Ra3!
      • 1...Qxb1
        • 2.Qxd5#
      • 1...Sxb4
        • 2.Re3#
      • 1...bxc5
        • 2.Sxc5#
      • 1...Sc7
        • 2.Qe3#
      • 1...Qd3
        • 2.Bxd3#
      • 1...Sc1
        • 2.Rd4#
      • 1...Sg1
        • 2.Rd4#
      • 1...Sec3
        • 2.Qd4#
      • 1...Sg3
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sef4
        • 2.Rd4#
      • 1...Sdc3
        • 2.Qe5#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sdf4
        • 2.Re3#
      • 1...Sf6
        • 2.Re3#

There are these versions: 74498

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINQ(F),OGATE::B(A),XQ(b)
    • S(c);N_PINQ(F)::QAR1(F)
    • S(f);N_PINQ(F)::QAR1(F)
  • Tries
    • Try
      • R(B);N_SPINQ(F),XQ(b)
      • Threat
        • B(A)+R(B),DCHECK
      • Vars
        • B(a);OGATE,P_SPINB(a),XR(B)::B(A),XB(a)
        • S(c);N_GUARD::QAR1(F),XS(c)
        • S(c);N_GUARD::QAR1(F)
        • S(f);OGATE::QAR1(F)
      • Refutation
        • P(g);XQ(F)
    • Try
      • R(C);N_SPINQ(F),XQ(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);OGATE,P_SPINB(a),XR(C)::B(A),XB(a)
        • S(c);::B(A)+R(C),DCHECK
        • S(f);::B(A)+R(C),DCHECK
        • S(f);::B(A)+R(C),DCHECK,XS(c)
      • Refutation
        • P(g);XQ(F)
  • Actual
    • R(B);
    • Vars
      • Q(b);N_PINQ(F),N_SPINQ(b),XB(A)::QAB1(F),XS(f)
      • S(f);N_GUARD,XP(D)::R1(B)
      • P(g);XQ(F)::S(H),XP(g)
      • S(f);N_PINQ(F)::QAR1(F)
      • Q(b);N_PINQ(F),OGATE::B(A),XQ(b)
      • S(c);N_GUARD::R1(C)
      • S(c);N_PINQ(F)::QAR1(F)
      • S(c);N_GUARD::R1(C),XS(c)
      • S(f);N_GUARD::R1(B),XS(f)
      • S(f);N_GUARD::R1(B)
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