MESON Chess Problem Database

Problem Display
PID: 49933 (3n2Qb/1br5/5p2/3p1k1P/1R4N1/4B3/K2N4/3B1r2 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1939

3n2Qb/1br5/5p2/3p1k1P/1R4N1/4B3/K2N4/3B1r2

#2

8 + 8

3979 Systematic Terminology 1984
15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd1
      • 2.Rf4#
    • 1...Re1
      • 2.Rf4#
    • 1...Rg1
      • 2.Rf4#
    • 1...Rh1
      • 2.Rf4#
    • 1...Rf4
      • 2.Rxf4#
    • 1...Rc2+
      • 2.Bxc2#
    • 1...Rc6
      • 2.Qxd5#
    • 1...Rd7
      • 2.Bc2#
    • 1...Rg7
      • 2.Bc2#
    • 1...Rh7
      • 2.Bc2#
    • 1...Ba6
      • 2.Qxd5#
    • 1...Bc6
      • 2.Bc2#
    • 1...Bc8
      • 2.Qxd5#
    • 1...Sc6
      • 2.Bc2#
    • 1...Se6
      • 2.Qg6#
  • Keys
    • 1.Rb6!
      • threat
        • 2.Qg6#
      • 1...Rc2+
        • 2.Bxc2#
      • 1...Rc6
        • 2.Qxd5#
      • 1...Rg7
        • 2.Rxf6#
      • 1...Bc6
        • 2.Bc2#
      • 1...Bg7
        • 2.Qh7#
      • 1...Sc6
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD,XB(A)::R1(E)
    • R(a);N_GUARD::R1(E)
    • R(a);N_GUARD::R1(E),XR(a)
    • R(f);CHECK,N_GUARD::B(A),XR(f)
    • R(f);S_CUTB(e)::QAR2(H),XP(b)
    • R(f);N_GUARD::B(A)
    • B(e);N_GUARD::QAR2(H),XP(b)
    • B(e);S_CUTR(f)::B(A)
    • S(g);S_CUTR(f)::B(A)
    • S(g);SBLOCK::QAB1(H)
  • Actual
    • R(E);
    • Threat
      • QAB1(H)
    • Vars
      • R(f);CHECK,N_GUARD::B(A),XR(f)
      • R(f);S_CUTB(e)::QAR2(H),XP(b)
      • R(f);S_CUTB(h)::R1(E),XP(d)
      • B(e);S_CUTR(f)::B(A)
      • B(h);S_CUTR(f)::QAB(H)
      • S(g);S_CUTR(f)::B(A)
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