MESON Chess Problem Database

Problem Display
PID: 147056 (5K2/4pQ2/2n5/2p1kN2/2n2r1R/2Np3B/1B3R2/8 w - - 0 1)

Saunders, Denis M

1st HM., Australian Chess Problem Magazine TT, 1995-1996

5K2/4pQ2/2n5/2p1kN2/2n2r1R/2Np3B/1B3R2/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2
      • 2.Re4#
    • 1...Rf3
      • 2.Re4#
    • 1...Re4
      • 2.Rxe4#
    • 1...Sb4
      • 2.Qxe7#
    • 1...Sa5
      • 2.Qxe7#
    • 1...Sa7
      • 2.Qxe7#
    • 1...Sb8
      • 2.Qxe7#
    • 1...e6
      • 2.Qg7#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qxf4#
      • 1...Kd4
        • 2.Qxf4#
      • 1...Kd6
        • 2.Sb5#
      • 1...Rxf2
        • 2.Sxc4#
      • 1...Rxh4
        • 2.Qd5#
      • 1...Rd4
        • 2.Qe6#
      • 1...Rf3
        • 2.Sxc4#
      • 1...Re4
        • 2.Qd5#
      • 1...Rg4
        • 2.Qd5#
      • 1...Rf5
        • 2.Sxc4#
      • 1...Rf6
        • 2.Sxc4#
      • 1...Rxf7+!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qxf4#
      • 1...Rxf7+
        • 2.Sxf7#
      • 1...Kd4
        • 2.Qxf4#
      • 1...Kxd6
        • 2.Sb5#
      • 1...Rxf2
        • 2.Sxc4#
      • 1...Rxh4
        • 2.Qd5#
      • 1...Rd4
        • 2.Qe6#
      • 1...Rf3
        • 2.Sxc4#
      • 1...Re4
        • 2.Qd5#
      • 1...Rg4
        • 2.Qd5#
      • 1...Rf5
        • 2.Sxc4#
      • 1...Rf6
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 8
    • REMOVED MATES = 5
  • Sets
    • R(c);OGATE,XR(B)::R1(E)
    • R(c);OGATE::R1(E)
    • R(c);OGATE::R1(E),XR(c)
    • S(f);N_GUARD::QAR2(G),XP(g)
    • P(g);SBLOCK::QAB(G)
  • Tries
    • Try
      • S(F);P_SPINQ(G)
      • Threat
        • QAB1(G),XR(c)
      • Vars
        • K(e);P_SPINR(c),S_FLIGHT::QAR2(G),XR(c)
        • K(e);S_FLIGHT::S(C)
        • R(c);N_GUARD,XR(B)::S(F),XS(b)
        • R(c);N_PINQ(G),XR(E)::QAR1(G)
        • R(c);N_PINQ(G)::QAR1(G)
        • R(c);N_GUARD::S(F),XS(b)
      • Refutation
        • R(c);CHECK,XQ(G)
  • Actual
    • S(F);P_SPINQ(G)
    • Threat
      • QAB1(G),XR(c)
    • Vars
      • R(c);CHECK,XQ(G)::S(F),XR(c)
      • K(e);P_SPINR(c),S_FLIGHT::QAR2(G),XR(c)
      • K(e);S_FLIGHT,XS(F)::S(C)
      • R(c);N_GUARD,XR(B)::S(F),XS(b)
      • R(c);N_PINQ(G),XR(E)::QAR1(G)
      • R(c);N_PINQ(G)::QAR1(G)
      • R(c);N_GUARD::S(F),XS(b)
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