MESON Chess Problem Database

Problem Display
PID: 233194 (B3KQ1b/BN1pp3/3NP1P1/1p2k1p1/3R1p2/3p3q/1P5P/4r3 w - - 0 1)

Lindner, Erich

Freie Presse, 1964

B3KQ1b/BN1pp3/3NP1P1/1p2k1p1/3R1p2/3p3q/1P5P/4r3

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qxe7#
    • 1...Qf1
      • 2.Qf5#
    • 1...Qg2
      • 2.Qf5#
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qxh2
      • 2.Qf5#
    • 1...Qe3
      • 2.Qf5#
    • 1...Qf3
      • 2.Qf5#
    • 1...Qg3
      • 2.Qf5#
    • 1...Qh4
      • 2.Qf5#
    • 1...Qh5
      • 2.Qf5#
    • 1...Qh6
      • 2.Qf5#
    • 1...Qh7
      • 2.Qf5#
    • 1...g4
      • 2.Qf5#
  • Tries
    • 1.Sc4+?
      • 1...Kxe6
        • 2.Sc5#
        • 2.Sd8#
        • 2.Qf7#
      • 1...bxc4!
    • 1.Rd5+?
      • 1...Kxe6
        • 2.Sc5#
        • 2.Sd8#
        • 2.Qf7#
      • 1...Kxd5!
    • 1.Qg7+?
      • 1...Kxe6
        • 2.Sc5#
        • 2.Sd8#
        • 2.Qxe7#
      • 1...Bxg7!
    • 1.Qxf4+?
      • 1...Kxe6
        • 2.Sc5#
        • 2.Sd8#
      • 1...gxf4!
    • 1.Qxh8+?
      • 1...Kxe6
        • 2.Sc5#
        • 2.Sd8#
      • 1...Qxh8+!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rd5#
      • 1...Kxd4
        • 2.Sxd7#
      • 1...Qxe6
        • 2.Sxd3#
      • 1...dxe6
        • 2.Sd7#
      • 1...Qg2
        • 2.Qxh8#
      • 1...Qf3
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • K(f);OGATEB,P-FLIGHT,XP(E)::QAR1(K),XP(i)
    • Q(c);N_GUARD::QAR1(K)
    • Q(c);N_GUARD::QAR1(K),XQ(c)
    • Q(c);N_GUARD,XP(B)::QAR1(K)
    • Q(c);N_GUARD,P_PINP(F)::QAR1(K)
    • P(g);S_CUTQ(c)::QAR1(K)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • P(e);XS(D)
    • Try
      • R(C);CHECK
      • Refutation
        • K(f);P-FLIGHT,XR(C)
    • Try
      • Q(K);CHECK
      • Refutation
        • B(j);XQ(K)
    • Try
      • Q(K);CHECK,XP(d)
      • Refutation
        • P(g);XQ(K)
    • Try
      • Q(K);CHECK,XB(j)
      • Refutation
        • Q(c);CHECK,XQ(K)
  • Actual
    • S(H);
    • Threat
      • R1(C)
    • Vars
      • K(f);S_FLIGHT,XR(C)::B(G)+S(H),XP(h)
      • Q(c);N_GUARD,SBLOCK,XP(E)::S(H),XP(b)
      • P(h);SBLOCK,XP(E)::S(H)
      • Q(c);N_GUARD::QAB(K),XB(j)
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