MESON Chess Problem Database

Problem Display
PID: 91958 (6b1/3r4/2N3Q1/3kB3/nP6/6N1/2K5/5B2 w - - 0 1)

Linss, Torsten

Schach, 1983

6b1/3r4/2N3Q1/3kB3/nP6/6N1/2K5/5B2

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxd6#
    • 1...Ra7
      • 2.Qd6#
    • 1...Rb7
      • 2.Qd6#
    • 1...Rc7
      • 2.Qd6#
    • 1...Re7
      • 2.Qd6#
    • 1...Rf7
      • 2.Qd6#
    • 1...Rg7
      • 2.Qd6#
    • 1...Rh7
      • 2.Qd6#
    • 1...Be6
      • 2.Qe4#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Bg2#
        • 2.Bc4#
      • 1...Rd6
        • 2.Bg2#
        • 2.Qxd6#
      • 1...Be6
        • 2.Bg2#
        • 2.Qe4#
      • 1...Rf7
        • 2.Bc4#
        • 2.Qd6#
      • 1...Sb2
        • 2.Bg2#
      • 1...Sc3
        • 2.Bc4#
      • 1...Sb6
        • 2.Bg2#
      • 1...Sc5+!
    • 1.Se7+?
      • 1...Rxe7
        • 2.Qd6#
      • 1...Kxe5!
    • 1.Qd3+?
      • 1...Kxc6
        • 2.Qb5#
      • 1...Ke6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se3#
      • 1...Ke4
        • 2.Bg2#
      • 1...Rd6
        • 2.Sfe7#
      • 1...Be6
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAR1(G),XR(c)
    • R(c);N_GUARD::QAR1(G)
    • R(c);N_GUARD,P_PINS(F)::QAR1(G)
    • B(d);SBLOCK::QAB1(G)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::B(A)
      • Refutation
        • S(a);CHECK
    • Try
      • S(F);CHECK
      • Vars
        • R(c);XS(F)::QAR1(G)
      • Refutation
        • K(b);P-FLIGHT,XB(E)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(F)::QAB1(G)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT::B(A)
      • R(c);N_GUARD::S(C)
      • B(d);SBLOCK::QAB(G)
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