MESON Chess Problem Database

Problem Display
PID: 55938 (4n2R/p7/r1R5/2Nq2k1/4p2N/3PP2P/1p1Q2K1/8 w - - 0 1)

Tucker, HJ

4th HM., Brisbane Courier, 1914-1915

4n2R/p7/r1R5/2Nq2k1/4p2N/3PP2P/1p1Q2K1/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sxe4#
    • 1...Qb3
      • 2.Sxe4#
    • 1...Qf7
      • 2.Sxe4#
    • 1...Qg8
      • 2.Sxe4#
    • 1...Qd6
      • 2.Sxe4#
    • 1...Qd7
      • 2.Sxe4#
    • 1...Qd8
      • 2.Sxe4#
    • 1...Ra1
      • 2.Rg6#
    • 1...Ra2
      • 2.Rg6#
    • 1...Ra3
      • 2.Rg6#
    • 1...Ra4
      • 2.Rg6#
    • 1...Ra5
      • 2.Rg6#
    • 1...exd3+
      • 2.e4#
  • Tries
    • 1.Sf3+?
      • 1...Kf5
        • 2.Rh5#
      • 1...exf3+!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Sxe4#
      • 1...exd3+
        • 2.Se4#
      • 1...Qxc5
        • 2.Qxc5#
      • 1...Rxa5
        • 2.Rg6#
      • 1...Sd6
        • 2.Qd8#
      • 1...Sf6
        • 2.Se6#

There are these versions: 2962

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(c);N_GUARD::S(G),XP(b)
    • R(e);N_GUARD::R1(H)
    • P(b);CHECK,OGATE,XP(C)::QAB(A)+P(D)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT::R(I)
      • Refutation
        • P(b);CHECK,XS(F)
  • Actual
    • Q(A);
    • Threat
      • S(G),XP(b)
    • Vars
      • P(b);CHECK,XP(C)::S(G)
      • Q(c);OGATE,P_SPINQ(c),XS(G)::QAR(A),XQ(c)
      • R(e);N_GUARD,XQ(A)::R1(H)
      • S(g);N_GUARD,S_CUTQ(c)::QAB(A)
      • S(g);SBLOCK::S(G)
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