MESON Chess Problem Database

Problem Display
PID: 30241 (8/B2r2p1/R4p2/1P1k2nR/NKN5/1ppP1n2/2r3B1/3b4 w - - 0 1)

Shire, David J

British Chess Magazine, 1989

8/B2r2p1/R4p2/1P1k2nR/NKN5/1ppP1n2/2r3B1/3b4

#2

9 + 10

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sxc3#
    • 1...Rb2
      • 2.Sxc3#
    • 1...Rd2
      • 2.Sxc3#
    • 1...Re2
      • 2.Sxc3#
    • 1...Rf2
      • 2.Sxc3#
    • 1...Rxg2
      • 2.Sxc3#
    • 1...Rd6
      • 2.Rxd6#
    • 1...Rxa7
      • 2.Rd6#
    • 1...Rb7
      • 2.Rd6#
    • 1...Rc7
      • 2.Rd6#
    • 1...Re7
      • 2.Rd6#
    • 1...Rf7
      • 2.Rd6#
  • Tries
    • 1.Bh3?
      • threat
        • 2.Be6#
      • 1...Rxa7
        • 2.Rd6#
      • 1...Re2
        • 2.Sxc3#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Re7
        • 2.Rd6#
      • 1...Sd4
        • 2.Sab6#
      • 1...Se5
        • 2.Se3#
      • 1...f5!
    • 1.Rxg5+?
      • 1...f5
        • 2.Rxf5#
      • 1...fxg5!
    • 1.Rxf6?
      • threat
        • 2.Rxg5#
      • 1...Rxg2
        • 2.Sxc3#
      • 1...Rxa7
        • 2.Rd6#
      • 1...Re2
        • 2.Sxc3#
      • 1...Re7
        • 2.Rd6#
      • 1...gxf6!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Rd4#
      • 1...Rxg2
        • 2.Sxc3#
      • 1...Rxa7
        • 2.Rd6#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Se4
        • 2.dxe4#
      • 1...Se6
        • 2.Sab6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::S(C),XP(d)
    • R(b);N_GUARD,N_SPINS(e),P_SPINS(g),XB(A)::S(C),XP(d)
    • R(i);N_GUARD::R1(H),XR(i)
    • R(i);N_GUARD,XB(I)::R1(H)
    • R(i);N_GUARD,P_PINP(F)::R1(H)
    • R(i);N_GUARD::R1(H)
  • Tries
    • Try
      • B(A);N_PINS(e),P_PINS(g)
      • Threat
        • B(A)
      • Vars
        • R(i);N_GUARD,XB(I)::R1(H)
        • R(b);N_GUARD::S(C),XP(d)
        • R(i);N_GUARD::R1(H),XR(i)
        • R(i);N_GUARD::R1(H)
        • S(e);SBLOCK::S(C)
        • S(e);N_SPINS(g),SBLOCK::S(E)
      • Refutation
        • P(h);N_SPINS(g)
    • Try
      • R(G);CHECK,XS(g)
      • Vars
        • P(h);P_SPINP(h)::R(G),XP(h)
      • Refutation
        • P(h);XR(G)
    • Try
      • R(H);XP(h)
      • Threat
        • R(G),XS(g)
      • Vars
        • R(b);N_GUARD,N_SPINS(e),P_SPINS(g),XB(A)::S(C),XP(d)
        • R(i);N_GUARD,XB(I)::R1(H)
        • R(b);N_GUARD::S(C),XP(d)
        • R(i);N_GUARD::R1(H)
      • Refutation
        • P(j);XR(H)
  • Actual
    • R(G);
    • Threat
      • R1(G)
    • Vars
      • R(b);N_GUARD,N_SPINS(e),XB(A)::S(C),XP(d)
      • R(i);N_GUARD,XB(I)::R1(H)
      • R(i);N_GUARD::R1(H),XR(i)
      • S(g);N_SPINS(e),OGATE::P(B),XS(g)
      • S(g);SBLOCK::S(C)
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