MESON Chess Problem Database

Problem Display
PID: 21527 (4n3/5RnN/2K1N2B/1Q3P1p/3pk3/2p2rp1/5p2/8 w - - 0 1)

Tuxen, Harri Viggo

Good Companions (November), 1919

4n3/5RnN/2K1N2B/1Q3P1p/3pk3/2p2rp1/5p2/8

#2

7 + 9

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qd5#
    • 1...Re3
      • 2.Shg5#
    • 1...Rf4
      • 2.Qe2#
    • 1...Rxf5
      • 2.Qe2#
    • 1...Sd6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sf6#
    • 1...d3
      • 2.Qd5#
  • Tries
    • 1.Sxg7?
      • threat
        • 2.Re7#
      • 1...Rxf5
        • 2.Qe2#
        • 2.Qxf5#
      • 1...Sxg7
        • 2.Sf6#
      • 1...Rd3
        • 2.Qd5#
      • 1...Rf4
        • 2.Qe2#
      • 1...d3
        • 2.Qd5#
      • 1...Sc7
        • 2.Sf6#
      • 1...Re3!
    • 1.Bc1?
      • threat
        • 2.Seg5#
        • 2.Shg5#
      • 1...Rxf5
        • 2.Qe2#
      • 1...Re3
        • 2.Shg5#
      • 1...d3
        • 2.Shg5#
        • 2.Qd5#
      • 1...Sxe6!
    • 1.Bf4?
      • threat
        • 2.Shg5#
      • 1...Rxf4
        • 2.Qe2#
      • 1...Sxe6!
  • Keys
    • 1.Re7!
      • threat
        • 2.Sxg7#
      • 1...Rxf5
        • 2.Qe2#
      • 1...Sxf5
        • 2.Sc5#
      • 1...Sxe6
        • 2.Rxe6#
      • 1...Rd3
        • 2.Qd5#
      • 1...Re3
        • 2.Shg5#
      • 1...Rf4
        • 2.Seg5#
      • 1...Sc7
        • 2.Sf6#
      • 1...d3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK::QAB1(A)
    • R(c);SBLOCK::S(G)
    • R(c);N_GUARD::QAR2(A)
    • R(c);N_GUARD,XP(B)::QAR2(A)
    • S(i);N_GUARD::S(G)
    • S(i);N_GUARD::S(G),XS(i)
    • P(e);::QAB1(A)
  • Tries
    • Try
      • S(D);XS(h)
      • Threat
        • R(F)
      • Vars
        • S(i);N_GUARD,XS(D)::S(G)
        • R(c);SBLOCK::QAB1(A)
        • R(c);N_GUARD::QAR2(A)
        • P(e);::QAB1(A)
        • S(i);N_GUARD::S(G)
      • Refutation
        • R(c);
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);N_GUARD,XP(B)::QAR2(A)
        • R(c);::S(G)
      • Refutation
        • S(h);XS(D)
    • Try
      • B(E);
      • Threat
        • S(G)
      • Vars
        • R(c);N_GUARD,XB(E)::QAR2(A)
      • Refutation
        • S(h);XS(D)
  • Actual
    • R(F);
    • Threat
      • R(F)+S(D),XS(h)
    • Vars
      • R(c);N_GUARD,SBLOCK,XP(B)::QAR2(A)
      • S(h);SBLOCK,XP(B)::R(F)+S(D),DCHECK
      • S(h);OGATE,P_SPINS(h),XS(D)::R(F),XS(h)
      • R(c);SBLOCK::QAB1(A)
      • R(c);SBLOCK::S(G)
      • R(c);SBLOCK::R(F)+S(D),DCHECK
      • S(i);N_GUARD::S(G)
      • P(e);::QAB1(A)
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