MESON Chess Problem Database

Problem Display
PID: 143510 (1Nb1n3/1p2B3/2p2R2/1Pp1kP2/5p2/2P1rBPK/2Q5/3RN3 w - - 0 1)

Colville, Robert A

British Chess Magazine, 1895

1Nb1n3/1p2B3/2p2R2/1Pp1kP2/5p2/2P1rBPK/2Q5/3RN3

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe1
      • 2.Rxe1#
    • 1...Re2
      • 2.Sd3#
      • 2.Qxe2#
    • 1...Rxc3
      • 2.Qe4#
      • 2.Qxc3#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rxf3
      • 2.Sxf3#
    • 1...Re4
      • 2.Qxe4#
    • 1...Bxf5+
      • 2.Qxf5#
    • 1...Be6
      • 2.Rxe6#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Sxf6
      • 2.Bd6#
    • 1...cxb5
      • 2.Rd5#
    • 1...b6
      • 2.Sxc6#
  • Keys
    • 1.Qd3!
      • 1...Bxf5+
        • 2.Qxf5#
      • 1...Rxe1
        • 2.Rxe1#
      • 1...Rxd3
        • 2.Sxd3#
      • 1...Rxf3
        • 2.Sxf3#
      • 1...Sxf6
        • 2.Bd6#
      • 1...fxg3
        • 2.Qxe3#
      • 1...cxb5
        • 2.Qd5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Re2
        • 2.Qxe2#
      • 1...Re4
        • 2.Qxe4#
      • 1...Be6
        • 2.Rxe6#
      • 1...Bd7
        • 2.Sxd7#
      • 1...Sc7
        • 2.Qd6#
      • 1...Sg7
        • 2.Qd6#
      • 1...c4
        • 2.Qd4#
      • 1...b6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,XS(B)::R(A),XR(a)
    • R(a);N_GUARD::S(B),XR(a)
    • R(a);N_PINP(I),P_PINP(F),XB(E)::S(B),XR(a)
    • R(a);N_GUARD::QAR1(C),XR(a)
    • B(g);CHECK,OGATE,XP(I)::QAR1(C),XB(g)
    • B(g);N_GUARD::R1(J),XB(g)
    • B(g);N_GUARD::S(L),XB(g)
    • S(h);N_GUARD,SBLOCK,XR(J)::B(K)
    • P(e);N_GUARD,XP(H)::R1(A)
    • P(f);N_GUARD::S(L),XP(e)
  • Actual
    • Q(C);
    • Vars
      • B(g);CHECK,OGATE,XP(I)::QAR1(C),XB(g)
      • R(a);OGATE,XS(B)::R(A),XR(a)
      • R(a);XQ(C)::S(B),XR(a)
      • R(a);N_PINP(I),P_PINP(F),XB(E)::S(B),XR(a)
      • S(h);N_GUARD,SBLOCK,XR(J)::B(K)
      • P(b);N_GUARD,XP(F)::QAR2(C),XR(a)
      • P(e);N_GUARD,XP(H)::QAR1(C)
      • S(h);N_GUARD::QAB1(C),XS(h)
      • R(a);OGATEB::QAR(C),XR(a)
      • R(a);N_GUARD::QAR1(C),XR(a)
      • B(g);N_GUARD::R1(J),XB(g)
      • B(g);N_GUARD::S(L),XB(g)
      • S(h);N_GUARD::QAB1(C)
      • P(c);N_GUARD::QAB1(C)
      • P(f);N_GUARD::S(L),XP(e)
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