MESON Chess Problem Database

Problem Display
PID: 47383 (1N1r3Q/2b2p2/Np2n2q/1P1kB1p1/R4P2/n1PP1p2/K3B3/1R3r2 w - - 0 1)

Howard, David M

Problem Observer, 2003

1N1r3Q/2b2p2/Np2n2q/1P1kB1p1/R4P2/n1PP1p2/K3B3/1R3r2

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb1
      • 2.Bxf3#
    • 1...Rc1
      • 2.Bxf3#
    • 1...Rd1
      • 2.Bxf3#
    • 1...Rg1
      • 2.Bxf3#
    • 1...Rh1
      • 2.Bxf3#
    • 1...Bxe5
      • 2.Qxe5#
    • 1...Sxb1
      • 2.c4#
    • 1...Sc2
      • 2.c4#
    • 1...Sxb5
      • 2.c4#
    • 1...Sc5
      • 2.Sxc7#
    • 1...f2
      • 2.Bf3#
  • Tries
    • 1.Sxc7+?
      • 1...Kc5
        • 2.Sba6#
      • 1...Sxc7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sb4#
      • 1...Rxb1
        • 2.Bxf3#
      • 1...Rxd7
        • 2.Qa8#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Sxf4
        • 2.Sxc7#
      • 1...Sd4
        • 2.Sxc7#
      • 1...Sc5
        • 2.Sxc7#
      • 1...Sg7
        • 2.Sxc7#
      • 1...Sf8
        • 2.Sxc7#
      • 1...Qf8
        • 2.Sf6#
      • 1...Bd6
        • 2.Sxb6#
      • 1...Sc2
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD,XR(A)::B(C),XP(c)
    • R(a);N_GUARD::B(C),XP(c)
    • B(i);OGATE,XB(I)::QAR1(L),XB(i)
    • S(b);N_GUARD,XR(A)::P(D)
    • S(b);N_GUARD::P(D)
    • S(b);N_GUARD,XP(H)::P(D)
    • S(g);N_GUARD,SBLOCK::S(J),XB(i)
    • P(c);S_CUTR(a)::B(C)
  • Tries
    • Try
      • S(J);CHECK,XB(i)
      • Vars
        • K(d);P-FLIGHT::S(K)
      • Refutation
        • S(g);XS(J)
  • Actual
    • S(K);
    • Threat
      • S(J)
    • Vars
      • R(a);N_GUARD,XR(A)::B(C),XP(c)
      • R(k);OGATE,XS(K)::QAB(L)
      • B(i);OGATE,XB(I)::QAR1(L),XB(i)
      • S(g);N_GUARD,XP(G)::S(J),XB(i)
      • S(g);N_GUARD::S(J),XB(i)
      • Q(h);N_GUARD::S(K)
      • B(i);N_GUARD::S(K),XP(f)
      • S(b);N_GUARD::P(D)
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Developed and maintained by Brian Stephenson.
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