MESON Chess Problem Database

Problem Display
PID: 152212 (4Q1b1/3R4/1r6/b1pp1p2/R1nk4/2pp4/1P3NB1/N5K1 w - - 0 1)

Dawson, Thomas Rayner

Young Scotland, 1938

4Q1b1/3R4/1r6/b1pp1p2/R1nk4/2pp4/1P3NB1/N5K1

#2

8 + 10

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Sxb3#
    • 1...Ra6
      • 2.Sb3#
    • 1...Rc6
      • 2.Sb3#
    • 1...Rd6
      • 2.Sb3#
    • 1...Rf6
      • 2.Sb3#
    • 1...Rg6
      • 2.Sb3#
    • 1...Rh6
      • 2.Sb3#
    • 1...Bb4
      • 2.Sb3#
    • 1...Bh7
      • 2.Rxd5#
    • 1...d2
      • 2.Sc2#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Qe3#
        • 2.Qe5#
      • 1...cxb2
        • 2.Qe5#
      • 1...fxg4
        • 2.Qe4#
      • 1...d2
        • 2.Qe3#
      • 1...Re6
        • 2.Sb3#
        • 2.Rxd5#
      • 1...Bb4
        • 2.Sb3#
      • 1...Be6
        • 2.Qh8#
      • 1...f4
        • 2.Qe4#
        • 2.Qe5#
      • 1...Rb4!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Qe3#
      • 1...Re6
        • 2.Rxd5#
      • 1...Be6
        • 2.Qh8#
      • 1...Rb4
        • 2.bxc3#
      • 1...Bb4
        • 2.Sb3#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(i);N_GUARD::S(A),XR(i)
    • R(i);N_GUARD::S(A)
    • R(i);N_GUARD,N_SPINP(g)::S(A)
    • R(i);N_GUARD,P_PINB(E)::S(A)
    • B(e);N_SPINS(c),S_CUTR(i)::S(A)
    • B(j);N_GUARD::R1(G),XP(g)
    • P(b);N_GUARD::S(A)
    • P(h);N_GUARD::QAR1(H)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(C)::QAB1(H)
        • P(h);N_GUARD,XS(D)::QAR1(H)
        • P(b);::QAB1(H)
        • B(e);N_SPINS(c),S_CUTR(i)::S(A)
        • B(j);OGATE::QAB(H)
      • Refutation
        • R(i);N_SPINS(c)
  • Actual
    • S(D);
    • Threat
      • QAB1(H)
    • Vars
      • R(i);S_CUTB(j)::R1(G),XP(g)
      • B(j);OGATE::QAB(H)
      • R(i);N_SPINS(c),S_CUTB(e)::P(C),XP(a)
      • B(e);N_SPINS(c),S_CUTR(i)::S(A)
      • P(h);N_GUARD::QAR1(H)
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