MESON Chess Problem Database

Problem Display
PID: 17130 (8/4p3/K2kB3/2pP2p1/N4R2/p7/r6B/b7 w - - 0 1)

Gibbins, Norman Martin

Leeds Mercury, 1901

8/4p3/K2kB3/2pP2p1/N4R2/p7/r6B/b7

#2

6 + 7

3360 Simple Two-move Themes 1924
887 Mate in Two Moves 1931
5501 Chess Cameos 1936
268 Chess Life 1959

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Rf2#
    • 1...Bb2
      • 2.Rd4#
  • Tries
    • 1.Re4+?
      • 1...Be5
        • 2.Bxe5#
      • 1...Rxh2!
    • 1.Rf5+?
      • 1...Be5
        • 2.Bxe5#
      • 1...Rxh2!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Rf1#
        • 2.Rf2#
        • 2.Rf3#
        • 2.Ra4#
        • 2.Rb4#
        • 2.Rc4#
        • 2.Rd4#
        • 2.Re4#
        • 2.Rg4#
        • 2.Rh4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...axb2+
        • 2.Ra4#
      • 1...Ke5
        • 2.Sc4#
      • 1...Kc7
        • 2.Rf8#
      • 1...Rxb2
        • 2.Rf2#
      • 1...Bxb2
        • 2.Rd4#
      • 1...gxf4
        • 2.Bxf4#
      • 1...c4
        • 2.Rxc4#
      • 1...g4
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(b);S_CUTB(a)::B(A)+R(C)
    • B(a);S_CUTR(b)::B(A)+R(C)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::B(A),XB(a)
      • Refutation
        • R(b);XB(A)
    • Try
      • R(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::B(A),XB(a)
      • Refutation
        • R(b);XB(A)
  • Actual
    • S(B);
    • Threat
      • DUALS(14)
    • Vars
      • P(c);CHECK,XS(B)::B(A)+R(C)
      • K(f);S_FLIGHT::S(B)
      • K(f);S_FLIGHT::B(A)+R(C)
      • R(b);XS(B)::B(A)+R(C)
      • B(a);XS(B)::B(A)+R(C)
      • P(e);OGATE,P_SPINP(e),XR(C)::B(A),XP(e)
      • P(d);::B(A)+R(C),XP(d)
      • P(e);::B(A)+R(C),XP(e)
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