MESON Chess Problem Database

Problem Display
PID: 53131 (8/4N3/1p1R3p/1bP1k1pq/1Q2N3/2P1Kp2/4n3/b7 w - - 0 1)

Beck, Friedrich

Schach-Express, 1950

8/4N3/1p1R3p/1bP1k1pq/1Q2N3/2P1Kp2/4n3/b7

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd4#
    • 1...Sxc3
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sf4
      • 2.Qd4#
    • 1...bxc5
      • 2.Qxc5#
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qe4#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Sxg3
        • 2.Qd4#
      • 1...bxc5
        • 2.Qxc5#
      • 1...Qg4
        • 2.Sg6#
      • 1...Qg6
        • 2.Sxg6#
      • 1...Qh4
        • 2.Sg6#
      • 1...Bd3
        • 2.Sc6#
      • 1...Bc4
        • 2.Sc6#
      • 1...Bc6
        • 2.Sxc6#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAB1(C)
    • S(b);N_GUARD,XP(A)::QAB1(C)
    • S(b);N_GUARD::QAB1(C),XS(b)
    • P(h);OGATE,XP(E)::QAR2(C),XP(h)
  • Actual
    • S(D);
    • Threat
      • QAR1(C)
    • Vars
      • S(b);N_GUARD,XP(A)::QAB1(C)
      • S(b);N_GUARD,XS(D)::QAB1(C)
      • P(h);OGATE,XP(E)::QAR2(C),XP(h)
      • Q(g);N_GUARD::S(G)
      • Q(g);N_GUARD::S(G),XQ(g)
      • B(d);N_GUARD::S(G)
      • B(d);N_GUARD::S(G),XB(d)
      • S(b);N_GUARD::QAB1(C),XS(b)
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