MESON Chess Problem Database

Problem Display
PID: 275459 (8/qp3Q1K/b7/4p1N1/2p5/Nr2kpP1/r4pn1/B1bR1Bn1 w - - 0 1)

Howard, Kenneth Samuel

British Chess Magazine, 1935

8/qp3Q1K/b7/4p1N1/2p5/Nr2kpP1/r4pn1/B1bR1Bn1

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa1
      • 2.Sc2#
    • 1...Rc2
      • 2.Sxc2#
    • 1...Rb5
      • 2.Sxc4#
    • 1...Bb2
      • 2.Sc2#
    • 1...Se2
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qxf3#
    • 1...b5
      • 2.Qxa7#
  • Tries
    • 1.Bd4+?
      • 1...exd4
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Qxd4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxe5#
      • 1...Qd4
        • 2.Bxd4#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qb8
        • 2.Bd4#
        • 2.Qc5#
      • 1...Rb5
        • 2.Sxc4#
      • 1...Bb2
        • 2.Sc2#
      • 1...e4
        • 2.Qxe4#
      • 1...b5
        • 2.Qxa7#
      • 1...b6
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD,XB(A)::S(D)
    • R(c);N_GUARD::S(D),XR(c)
    • R(f);S_CUTB(k)::S(D),XP(i)
    • B(a);S_CUTR(c)::S(D)
    • S(b);N_GUARD::QAR1(G),XP(h)
    • P(m);OGATE,P_PINQ(G)::QAB(G),XQ(l)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • Q(l);XB(A)
  • Actual
    • Q(G);P_PINP(j)
    • Threat
      • QAR2(G),XP(j)
    • Vars
      • Q(l);N_GUARD::B(A),XQ(l)
      • Q(l);N_GUARD::QAB(G),XQ(l)
      • R(f);S_CUTB(k)::S(D),XP(i)
      • B(a);S_CUTR(c)::S(D)
      • P(j);OGATE::QAR1(G),XP(j)
      • P(m);OGATE,P_PINQ(G)::QAB(G),XQ(l)
      • P(m);P_PINQ(G),S_CUTQ(l)::B(A)
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