MESON Chess Problem Database

Problem Display
PID: 24704 (8/3p4/3BpQ2/2pn1N2/4kb2/5RRK/B1b5/8 w - - 0 1)

Saunders, Denis M

The Problemist, 2000

8/3p4/3BpQ2/2pn1N2/4kb2/5RRK/B1b5/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Bxb1#
    • 1...Bc1
      • 2.Qe5#
    • 1...Bd2
      • 2.Qe5#
    • 1...Bxg3
      • 2.Sxg3#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bg5
      • 2.Qe5#
    • 1...Bxd6
      • 2.Sxd6#
    • 1...Bh6
      • 2.Qe5#
    • 1...Sc3
      • 2.Rxf4#
    • 1...Sb4
      • 2.Rxf4#
    • 1...Sb6
      • 2.Rxf4#
    • 1...Sxf6
      • 2.Rxf4#
    • 1...Sc7
      • 2.Rxf4#
    • 1...Se7
      • 2.Rxf4#
  • Tries
    • 1.Bxd5+?
      • 1...exd5
        • 2.Rxf4#
      • 1...Kxd5!
    • 1.Qd4+?
      • 1...Kxf5
        • 2.Qe5#
      • 1...cxd4!
    • 1.Qxe6+?
      • 1...Be5
        • 2.Bxd5#
        • 2.Qxd5#
        • 2.Qxe5#
      • 1...dxe6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qxc2#
      • 1...Kxf5
        • 2.Qe5#
      • 1...Bxg3
        • 2.Sxg3#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Sxc3
        • 2.Rxf4#
      • 1...exf5
        • 2.Qc4#
      • 1...Bb1
        • 2.Bxb1#
      • 1...Bd1
        • 2.Qd3#
      • 1...Bb3
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Ba4
        • 2.Qd3#
      • 1...Se3
        • 2.Rxf4#
      • 1...Sb4
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 9
  • Sets
    • B(a);OGATEB::B(A),XB(a)
    • B(c);N_GUARD::QAR1(G)
    • B(c);XR(C)::S(E),XB(c)
    • B(c);N_GUARD::QAR1(G),XB(c)
    • B(c);XB(F)::S(E),XB(c)
    • S(e);N_GUARD::R1(B),XB(c)
    • S(e);N_GUARD,XQ(G)::R1(B),XB(c)
  • Tries
    • Try
      • B(A);CHECK,XS(e)
      • Vars
        • P(f);SBLOCK,XB(A)::R1(B),XB(c)
      • Refutation
        • K(b);S_FLIGHT,XB(A)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P_SPINB(c),S_FLIGHT,XS(E)::QAR1(G)
      • Refutation
        • P(d);XQ(G)
    • Try
      • Q(G);CHECK,XP(f)
      • Refutation
        • P(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G),XB(a)
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT,XS(E)::QAR1(G)
      • B(c);XR(C)::S(E),XB(c)
      • B(c);XB(F)::S(E),XB(c)
      • S(e);N_GUARD,XQ(G)::R1(B),XB(c)
      • P(f);SBLOCK,XS(E)::QAR2(G)
      • B(a);OGATEB::B(A),XB(a)
      • B(a);N_GUARD::QAB1(G)
      • B(a);N_GUARD::QAB1(G),XB(a)
      • S(e);N_GUARD::R1(B),XB(c)
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