MESON Chess Problem Database

Problem Display
PID: 39088 (8/1p6/1p6/1Pp2K2/3k1p2/Q1R2P2/Bn6/8 w - - 0 1)

Fletcher, L Elliott

British Chess Magazine, 1940

8/1p6/1p6/1Pp2K2/3k1p2/Q1R2P2/Bn6/8

#2

6 + 6

56 The Problemist 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
    • 1...Sa4
      • 2.Rd3#
    • 1...Sc4
      • 2.Rd3#
  • Tries
    • 1.Kxf4?
      • 1...Sd3+
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sa4
        • 2.Rd3#
      • 1...c4!
    • 1.Ke6?
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sd1
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sa4
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sc4
        • 2.Rd3#
        • 2.Rxc4#
      • 1...c4!
    • 1.Kf6?
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sa4
        • 2.Rd3#
      • 1...c4!
    • 1.Be6?
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sd1
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sa4
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sc4
        • 2.Rd3#
        • 2.Rxc4#
      • 1...c4!
    • 1.Bf7?
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sd1
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sa4
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sc4
        • 2.Rd3#
        • 2.Rxc4#
      • 1...c4!
    • 1.Bg8?
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sd1
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sa4
        • 2.Rd3#
        • 2.Rc4#
      • 1...Sc4
        • 2.Rd3#
        • 2.Rxc4#
      • 1...c4!
    • 1.Qb3?
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
        • 2.Qxc4#
      • 1...Sd1
        • 2.Rd3#
        • 2.Qc4#
      • 1...Sa4
        • 2.Rd3#
        • 2.Qc4#
      • 1...c4!
  • Keys
    • 1.Rb3!
      • 1...Kc4
        • 2.Rb4#
      • 1...Kd5
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...c4
        • 2.Qd6#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sa4
        • 2.Rd3#
      • 1...Sc4
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
  • Tries
    • Try
      • K(F);P-FLIGHT,XP(c)
      • Vars
        • S(a);CHECK,N_GUARD::R1(C),XS(a)
        • S(a);N_GUARD::R1(C)
      • Refutation
        • P(d);
    • Try
      • K(F);S_FLIGHT
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • P(d);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
        • S(a);N_GUARD::R1(C)
      • Refutation
        • P(d);
    • Try
      • B(A);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • P(d);
    • Try
      • B(A);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • P(d);
    • Try
      • B(A);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • P(d);
  • Actual
    • R(C);
    • Vars
      • K(b);P-FLIGHT::B(A)+R(C),DCHECK
      • S(a);N_GUARD::R1(C),XS(a)
      • P(d);OGATE,SBLOCK::QAR2(B)
      • S(a);N_GUARD::R1(C)
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