MESON Chess Problem Database

Problem Display
PID: 268554 (qQ5B/1pp3Rp/3k3r/b2pNPp1/bP4Kp/8/2p1R1B1/8 w - - 0 1)

Dycke-Robinson, T (= Dawson, Thomas Rayner)

British Chess Magazine, 1934

qQ5B/1pp3Rp/3k3r/b2pNPp1/bP4Kp/8/2p1R1B1/8

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Qf8#
    • 1...Qa7
      • 2.Qf8#
    • 1...Bb3
      • 2.Rd7#
    • 1...Bd7
      • 2.Rxd7#
    • 1...Bxb4
      • 2.Qxc7#
    • 1...d4
      • 2.Sc4#
    • 1...b5
      • 2.Rd7#
    • 1...b6
      • 2.Qxc7#
  • Tries
    • 1.Qd8+?
      • 1...Bd7
        • 2.Rxd7#
        • 2.Qe7#
        • 2.Qxd7#
      • 1...Qxd8!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Rxd5#
      • 1...Kxe5
        • 2.Rg6#
      • 1...Bb3
        • 2.Rd7#
      • 1...Bc6
        • 2.Sc4#
      • 1...d4
        • 2.Sc4#
      • 1...b5
        • 2.Rd7#
      • 1...b6
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(l);N_GUARD::QAB(H)
    • B(b);N_GUARD::R1(G)
    • B(b);N_GUARD,P_PINP(F)::R1(G),XB(b)
    • B(d);N_GUARD,XP(C)::QAB1(H),XP(j)
    • P(e);N_GUARD::S(E)
    • P(i);S_CUTB(b)::R1(G)
    • P(i);S_CUTB(d)::QAB1(H),XP(j)
  • Tries
    • Try
      • Q(H);CHECK,N_PINP(j)
      • Refutation
        • Q(l);XQ(H)
  • Actual
    • R(A);N_PINP(j),P_PINP(e)
    • Threat
      • R1(A),XP(e)
    • Vars
      • K(g);N_GUARD,N_SPINP(e),P_SPINP(j),S_CUTP(k),S_CUTR(h),S_FLIGHT,XS(E)::B(I)+R(G)
      • B(b);N_GUARD::R1(G)
      • B(b);SBLOCK::S(E)
      • P(e);::S(E)
      • P(i);S_CUTB(b)::R1(G)
      • P(i);S_CUTB(d)::QAB1(H),XP(j)
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