MESON Chess Problem Database

Problem Display
PID: 68677 (r3kbRK/Pqn1p3/B4Pp1/B2NN3/7Q/7p/3R4/1b3r2 w q - 0 1)

Latzel, Gerhard Paul

Schach, 1952

r3kbRK/Pqn1p3/B4Pp1/B2NN3/7Q/7p/3R4/1b3r2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Rxf8#
    • 1...Qxa6
      • 2.Sxc7#
    • 1...Qb2
      • 2.Sxc7#
    • 1...Qb3
      • 2.Sxc7#
    • 1...Qb4
      • 2.Sxc7#
    • 1...Qb5
      • 2.Sxc7#
    • 1...0-0-0
      • 2.Sb6#
  • Tries
    • 1.Bb5+?
      • 1...Kd8
        • 2.Rxf8#
      • 1...Qc6
        • 2.Sxc7#
      • 1...Qxb5
        • 2.Sxc7#
      • 1...Sxb5!
    • 1.Qa4+?
      • 1...Kd8
        • 2.Rxf8#
        • 2.Qd7#
      • 1...Qc6
        • 2.Sxc7#
      • 1...Qb5
        • 2.Sxc7#
      • 1...Sb5!
    • 1.f7+?
      • 1...Kd8
        • 2.Rxf8#
      • 1...Rxf7!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Rxf8#
      • 1...0-0-0
        • 2.Sb6#
      • 1...Sxd5
        • 2.Qf7#
      • 1...Sxa6
        • 2.Qf7#
      • 1...exf6
        • 2.Qd7#
        • 2.Qe7#
      • 1...Qb4
        • 2.Sxc7#
      • 1...Sb5
        • 2.Qf7#
      • 1...Se6
        • 2.Qf7#
      • 1...e6
        • 2.Qd7#
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • K(i);P-FLIGHT,P_SPINS(f)::R(I),XB(j)
    • Q(e);N_GUARD,XB(F)::S(D),XS(f)
    • Q(e);N_GUARD::S(D),XS(f)
    • K(i);0-0-0,N_SPINB(j),P_SPINQ(e)::S(D)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(i);P-FLIGHT,P_SPINS(f)::R(I),XB(j)
        • Q(e);P_SPINQ(e)::S(D),XS(f)
        • Q(e);XB(F)::S(D),XS(f)
      • Refutation
        • S(f);XB(F)
    • Try
      • Q(B);CHECK
      • Vars
        • Q(e);P_SPINQ(e)::S(D),XS(f)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • P(G);CHECK
      • Vars
        • K(i);P-FLIGHT,P_SPINP(g),P_SPINS(f)::R(I),XB(j)
      • Refutation
        • R(b);XP(G)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(g)
    • Vars
      • K(i);P-FLIGHT,P_SPINS(f)::R(I),XB(j)
      • K(i);0-0-0,N_SPINB(j),P_SPINQ(e)::S(D)
      • S(f);XS(D)::QAB1(B)
      • S(f);XB(F)::QAB1(B)
      • Q(e);N_GUARD::S(D),XS(f)
      • S(f);::QAB1(B)
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