MESON Chess Problem Database

Problem Display
PID: 105569 (KQ6/8/4B1n1/5N2/4kn1r/8/4P2B/5R2 w - - 0 1)

Schneider, Vilmos

Melbourne Club, 1953

KQ6/8/4B1n1/5N2/4kn1r/8/4P2B/5R2

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2
      • 2.Qb1#
    • 1...Sg2
      • 2.Qb1#
      • 2.Qb4#
      • 2.Qb7#
    • 1...Sd3
      • 2.Qb7#
    • 1...Sh3
      • 2.Qb1#
      • 2.Qb4#
      • 2.Qb7#
    • 1...Sd5
      • 2.Qb1#
    • 1...Sh5
      • 2.Qb1#
      • 2.Qb4#
      • 2.Qb7#
    • 1...Sxe6
      • 2.Qb7#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Re3#
      • 1...Sxe6
        • 2.Qb7#
      • 1...Sg2
        • 2.Qb1#
        • 2.Qb4#
        • 2.Qb7#
      • 1...Sd5
        • 2.Qb1#
      • 1...Rh3!
    • 1.Qd6?
      • threat
        • 2.Qd4#
      • 1...Sxe2
        • 2.Qd5#
      • 1...Sxe6
        • 2.Qd3#
        • 2.Qc6#
      • 1...Sd5
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Rh8+!
    • 1.Qb1+?
      • 1...Sd3
        • 2.Qxd3#
        • 2.Qb7#
        • 2.exd3#
      • 1...Ke5!
    • 1.Qb2?
      • threat
        • 2.Qd4#
      • 1...Sxe2
        • 2.Qb1#
        • 2.Qc2#
        • 2.Qxe2#
      • 1...Sxe6
        • 2.Qb7#
      • 1...Rh8+!
    • 1.Qb7+?
      • 1...Sd5
        • 2.Bxd5#
        • 2.Qxd5#
        • 2.Qb1#
      • 1...Ke5!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Rd4#
      • 1...Sxe2
        • 2.Qb7#
      • 1...Sxe6
        • 2.Qb1#
      • 1...Sd3
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD,XP(B)::QAB(G)
    • S(b);N_GUARD::QAB(G)
    • S(b);N_GUARD,XB(E)::QAB(G)
  • Tries
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • S(b);N_GUARD,XB(E)::QAB(G)
        • S(b);N_GUARD::QAB(G)
      • Refutation
        • R(c);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • S(b);N_GUARD,XP(B)::QAB1(G)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(G);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(b)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • S(b);N_GUARD,XB(E)::QAB(G)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(G);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(b)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • S(b);N_GUARD,XP(B)::QAB(G)
      • S(b);N_GUARD,XB(E)::QAB(G)
      • S(b);N_GUARD::QAB(G)
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