MESON Chess Problem Database

Problem Display
PID: 248622 (1Br5/1pq1pR1B/3b4/p3k1P1/2p2N1n/2P5/3NP2K/5R2 w - - 0 1)

Howard, Kenneth Samuel

British Chess Magazine, 1932

1Br5/1pq1pR1B/3b4/p3k1P1/2p2N1n/2P5/3NP2K/5R2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Rxe7#
    • 1...Qc5
      • 2.Rxe7#
    • 1...Qc6
      • 2.Rxe7#
    • 1...Ba3
      • 2.Sxc4#
    • 1...Bb4
      • 2.Sxc4#
    • 1...Bc5
      • 2.Sxc4#
    • 1...Sg2
      • 2.Sf3#
      • 2.Rf5#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...Sf5
      • 2.Rxf5#
  • Tries
    • 1.Rxe7+?
      • 1...Bxe7
        • 2.Sxc4#
      • 1...Qxe7!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Re3#
      • 1...Sxf3+
        • 2.Sxf3#
      • 1...Ba3
        • 2.Sxc4#
      • 1...Bb4
        • 2.Sxc4#
      • 1...Bc5
        • 2.Sxc4#
      • 1...Qb6
        • 2.Rxe7#
      • 1...Qc5
        • 2.Rxe7#
      • 1...Qc6
        • 2.Rxe7#
      • 1...Sg2
        • 2.Rf5#
      • 1...Sf5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD,P_SPINB(e)::R(H),XP(h)
    • B(e);P_SPINQ(g)::S(B),XP(a)
    • S(b);CHECK,N_GUARD::S(B),XS(b)
    • S(b);N_GUARD::R1(H),XS(b)
  • Tries
    • Try
      • R(H);CHECK,XP(h)
      • Vars
        • B(e);P_SPINQ(g),XR(H)::S(B),XP(a)
      • Refutation
        • Q(g);P_SPINB(e),XR(H)
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • S(b);CHECK,XR(A)::S(B),XS(b)
      • B(e);P_SPINQ(g)::S(B),XP(a)
      • Q(g);N_GUARD,P_SPINB(e)::R(H),XP(h)
      • S(b);N_GUARD::R1(H)
      • S(b);N_GUARD::R1(H),XS(b)
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