MESON Chess Problem Database

Problem Display
PID: 6294 (Q7/3N4/3pp1p1/3N2K1/p3k3/Rb2Pp2/2n5/5B2 w - - 0 1)

Thomson, Robert Gavin

Prize, The Referee, 1926-1927

(First published on Sun Mar 6 1927)

Q7/3N4/3pp1p1/3N2K1/p3k3/Rb2Pp2/2n5/5B2

#2

7 + 8

3098 FIDE Album (1914-1944) (I) 1971
56 The Problemist 2005
15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.S5f6#
      • 2.Bd3#
    • 1...Bc4
      • 2.S5f6#
    • 1...exd5
      • 2.Qe8#
    • 1...e5
      • 2.S7f6#
  • Tries
    • 1.Qxa4+?
      • 1...Kxd5
        • 2.Qa8#
        • 2.e4#
      • 1...Bxa4
        • 2.S5f6#
      • 1...Bc4
        • 2.S5f6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sb4!
  • Keys
    • 1.Qh8!
      • 1...Kxd5
        • 2.Qa8#
      • 1...Bxd5
        • 2.Qh4#
      • 1...Sxa3
        • 2.Qd4#
      • 1...Sxe3
        • 2.Sc3#
      • 1...exd5
        • 2.Qe8#
      • 1...f2
        • 2.Qh1#
      • 1...Ba2
        • 2.S5f6#
      • 1...Bc4
        • 2.S5f6#
      • 1...Sa1
        • 2.Qd4#
      • 1...Se1
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...e5
        • 2.S7f6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • B(b);::QAB(G)+S(D),DCHECK
    • P(g);OGATEB,P_SPINP(g),SBLOCK,XS(D)::QAR(G)
    • P(g);SBLOCK::S(F)
  • Tries
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • B(b);XQ(G)::S(D)
        • B(b);P_SPINB(b)::S(D)
        • S(a);N_GUARD,P_SPINS(a)::QAR1(G),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(G);
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(D)::QAB(G)
      • B(b);SBLOCK,XS(D)::QAR(G)
      • S(a);N_GUARD,XR(B)::QAR1(G)
      • S(a);SBLOCK,XP(C)::S(D)
      • P(g);OGATEB,SBLOCK,XS(D)::QAR(G)
      • P(c);OGATEB::QAB(G)
      • B(b);::S(D)
      • S(a);N_GUARD::QAR1(G)
      • S(a);N_GUARD::QAR1(G),XS(a)
      • P(g);SBLOCK::S(F)
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