MESON Chess Problem Database

Problem Display
PID: 176571 (7Q/3p1pn1/3P1P2/4kP2/1P1NN3/6R1/7K/2BR3B w - - 0 1)

Weissauer, Hermann

Schach-Echo, 1977

7Q/3p1pn1/3P1P2/4kP2/1P1NN3/6R1/7K/2BR3B

#2

12 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6+?
      • 1...Kxf5
        • 2.Qh3#
      • 1...dxc6!
    • 1.Sg5?
      • 1...Kxd6
        • 2.Bf4#
        • 2.Qb8#
      • 1...Sxf5
        • 2.Sdf3#
        • 2.Sxf7#
      • 1...Sh5
        • 2.Sxf7#
      • 1...Se6
        • 2.Sxf7#
      • 1...Se8
        • 2.Sxf7#
      • 1...Kxf6!
    • 1.Rc3?
      • threat
        • 2.Rc5#
      • 1...Kd5
        • 2.Sc6#
        • 2.Rc5#
      • 1...Se6!
    • 1.Qb8?
      • threat
        • 2.Qb5#
      • 1...Kd5
        • 2.Qb5#
      • 1...Se6!
    • 1.Qc8?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Se6!
  • Keys
    • 1.Sd2!
      • 1...Kxd4
        • 2.Bb2#
      • 1...Kf4
        • 2.Sc4#
      • 1...Kxd6
        • 2.Qb8#
      • 1...Kxf6
        • 2.Qxg7#
      • 1...Sxf5
        • 2.Sc4#
      • 1...Sh5
        • 2.Sc4#
      • 1...Se6
        • 2.Sc4#
      • 1...Se8
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(I)::QAB(L)
      • Refutation
        • P(b);XS(G)
    • Try
      • S(H);
      • Vars
        • S(d);::S(H),XP(c)
      • Refutation
        • K(a);P_SPINS(d),S_FLIGHT,XP(K)
    • Try
      • R(E);
      • Threat
        • R(E)
      • Refutation
        • S(d);
    • Try
      • Q(L);
      • Threat
        • QAR(L)
      • Vars
        • K(a);P-FLIGHT::QAR2(L)
      • Refutation
        • S(d);
    • Try
      • Q(L);
      • Threat
        • QAR2(L)
      • Vars
        • K(a);P-FLIGHT::QAR1(L)
      • Refutation
        • S(d);
  • Actual
    • S(H);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(G)::B(A)
      • K(a);S_FLIGHT::B(A)+S(H)
      • K(a);OGATEB,S_FLIGHT,XP(J)::QAB(L)
      • K(a);OGATEB,P_SPINS(d),S_FLIGHT,XP(K)::QAB1(L),XS(d)
      • S(d);XP(I)::S(H)
      • S(d);::S(H)
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