MESON Chess Problem Database

Problem Display
PID: 38280 (5b2/Nn4p1/6B1/p2N1p1b/k1p4n/6R1/KP2p3/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1947

5b2/Nn4p1/6B1/p2N1p1b/k1p4n/6R1/KP2p3/8

#2

6 + 10

3979 Systematic Terminology 1984
15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Be8#
    • 1...Bg4
      • 2.Be8#
    • 1...Ba3
      • 2.Rxa3#
    • 1...Bb4
      • 2.Sb6#
    • 1...Sc5
      • 2.Ra3#
    • 1...Sd6
      • 2.Ra3#
    • 1...c3
      • 2.b3#
    • 1...f4
      • 2.Bc2#
  • Tries
    • 1.Bxf5?
      • threat
        • 2.Bc2#
        • 2.Bd7#
      • 1...e1S
        • 2.Bd7#
      • 1...Bg4
        • 2.Bc2#
      • 1...Bg6
        • 2.Bd7#
      • 1...Be8
        • 2.Bc2#
      • 1...Sc5
        • 2.Ra3#
      • 1...Sd6
        • 2.Bc2#
        • 2.Ra3#
      • 1...Sd8
        • 2.Bc2#
      • 1...Sxf5!
    • 1.Rb3?
      • threat
        • 2.Sc3#
        • 2.Sb6#
      • 1...e1Q
        • 2.Sb6#
      • 1...e1B
        • 2.Sb6#
      • 1...Bb4
        • 2.Sb6#
      • 1...Bc5
        • 2.Sc3#
      • 1...c3
        • 2.Sxc3#
        • 2.Sb6#
      • 1...cxb3+!
  • Keys
    • 1.Rg4!
      • threat
        • 2.b3#
      • 1...Bxg4
        • 2.Be8#
      • 1...fxg4
        • 2.Bc2#
      • 1...Bb4
        • 2.Sb6#
      • 1...Sc5
        • 2.Rxc4#
      • 1...f4
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(g);N_GUARD::B(E)
    • B(j);N_GUARD::R1(C),XB(j)
    • B(j);SBLOCK::S(D)
    • S(h);S_CUTB(j)::R1(C)
    • P(c);N_GUARD::P(B)
    • P(f);OGATE::B(E)
  • Tries
    • Try
      • B(E);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::B(E)
        • B(g);::B(E)
        • S(h);S_CUTB(j)::R1(C)
        • S(h);::B(E)
      • Refutation
        • S(d);XB(E)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::S(D)
        • B(j);::S(D)
      • Refutation
        • P(c);CHECK,XR(C)
  • Actual
    • R(C);P_PINP(c)
    • Threat
      • P(B)
    • Vars
      • B(g);N_GUARD,N_SPINP(c),XR(C)::B(E)
      • P(f);N_SPINP(c),OGATE,XR(C)::B(E)
      • B(j);N_SPINP(c),SBLOCK::S(D)
      • S(h);S_CUTB(j)::R(C),XP(c)
      • P(f);N_SPINP(c),OGATE::B(E)
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