MESON Chess Problem Database

Problem Display
PID: 207664 (1nB2b2/3p1N2/3p3p/R2K1k1P/2pP3B/1pP3PP/p1q2p2/1Q5R w - - 0 1)

Fillery, William Edmund Frank

The Problemist, 1984

1nB2b2/3p1N2/3p3p/R2K1k1P/2pP3B/1pP3PP/p1q2p2/1Q5R

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4+
      • 2.Qxe4#
    • 1...Be7
      • 2.Sxh6#
    • 1...Bg7
      • 2.Sxd6#
    • 1...Sa6
      • 2.Bxd7#
    • 1...Sc6
      • 2.Bxd7#
    • 1...f1Q
      • 2.Rxf1#
    • 1...f1S
      • 2.Rxf1#
    • 1...f1B
      • 2.Rxf1#
    • 1...f1R
      • 2.Rxf1#
    • 1...b2
      • 2.Qxc2#
  • Tries
    • 1.Bg5?
      • threat
        • 2.g4#
      • 1...Qe4+
        • 2.Qxe4#
      • 1...hxg5!
    • 1.Be7?
      • threat
        • 2.Sxd6#
      • 1...Qe4+
        • 2.Kxd6#
        • 2.Qxe4#
      • 1...Bxe7!
  • Keys
    • 1.Rxa2!
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Qxb1
        • 2.Rxf2#
      • 1...bxa2
        • 2.Qxc2#
      • 1...f1Q
        • 2.Rxf1#
      • 1...f1S
        • 2.Rxf1#
      • 1...f1B
        • 2.Rxf1#
      • 1...f1R
        • 2.Rxf1#
      • 1...Qd3
        • 2.Rxf2#
      • 1...Be7
        • 2.Sxh6#
      • 1...Bg7
        • 2.Sxd6#
      • 1...Sa6
        • 2.Bxd7#
      • 1...Sc6
        • 2.Bxd7#
      • 1...b2
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,OGATE::QAB1(A),XQ(b)
    • B(k);N_GUARD::S(K),XP(h)
    • B(k);N_GUARD::S(K),XP(g)
    • S(j);N_GUARD::B(L),XP(i)
    • P(c);OGATEB::R(B),XQ(c)
    • P(c);OGATEB::R(B),XS(c)
    • P(c);OGATEB::R(B),XB(c)
    • P(c);OGATEB::R(B),XR(c)
    • P(d);N_GUARD::QAB(A),XQ(b)
  • Tries
    • Try
      • B(G);
      • Threat
        • P(D)
      • Vars
        • Q(b);CHECK,OGATE::QAB1(A),XQ(b)
      • Refutation
        • P(h);XB(G)
    • Try
      • B(G);
      • Threat
        • S(K),XP(g)
      • Refutation
        • B(k);XB(G)
  • Actual
    • R(H);XP(a)
    • Vars
      • Q(b);CHECK,OGATE::QAB1(A),XQ(b)
      • Q(b);N_SPINQ(b),OGATE,XQ(A)::R(H),XP(c)
      • P(d);N_GUARD,XR(H)::QAB(A),XQ(b)
      • P(c);OGATEB::R(B),XQ(c)
      • P(c);OGATEB::R(B),XS(c)
      • P(c);OGATEB::R(B),XB(c)
      • P(c);OGATEB::R(B),XR(c)
      • Q(b);OGATE,P_PINP(F)::R(H),XP(c)
      • B(k);N_GUARD::S(K),XP(h)
      • B(k);N_GUARD::S(K),XP(g)
      • S(j);N_GUARD::B(L),XP(i)
      • P(d);N_GUARD::QAB(A),XQ(b)
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