MESON Chess Problem Database

Problem Display
PID: 240019 (Kn1B3Q/8/3kB3/2NP4/2p1p3/N3R3/5bp1/1q3b2 w - - 0 1)

Schneider, Michael

Die Schwalbe, 1971

Kn1B3Q/8/3kB3/2NP4/2p1p3/N3R3/5bp1/1q3b2

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qc2
      • 2.Sb7#
    • 1...Qd3
      • 2.Sb7#
    • 1...Qa1
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qc1
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qd1
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qe1
      • 2.Sxe4#
      • 2.Sb7#
    • 1...Qb2
      • 2.Sxe4#
    • 1...Qb3
      • 2.Sxe4#
    • 1...Qb4
      • 2.Sxe4#
    • 1...Qb5
      • 2.Sxe4#
    • 1...Qb6
      • 2.Sxe4#
    • 1...Qb7+
      • 2.Sxb7#
  • Tries
    • 1.Sxb1?
      • threat
        • 2.Sxe4#
        • 2.Sb7#
      • 1...Bd3
        • 2.Sb7#
      • 1...Kxc5!
    • 1.Sb5+?
      • 1...Qxb5
        • 2.Sxe4#
      • 1...Kxc5!
    • 1.Be7+?
      • 1...Kc7
        • 2.Qd8#
      • 1...Kxe7!
    • 1.Rd3?
      • threat
        • 2.Sxe4#
      • 1...Qb7+
        • 2.Sxb7#
      • 1...Kxc5
        • 2.Qf8#
      • 1...Qxd3
        • 2.Sb7#
      • 1...Bxc5
        • 2.Sxc4#
        • 2.Qh2#
      • 1...exd3
        • 2.Se4#
      • 1...Qe1
        • 2.Sb7#
      • 1...e3
        • 2.Se4#
      • 1...Bxd3!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Sb7#
      • 1...Kxc5
        • 2.Be7#
      • 1...Qxb3
        • 2.Sxe4#
      • 1...Bxc5
        • 2.Sb5#
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::S(C)
    • Q(a);N_GUARD::S(C),XP(f)
    • Q(a);CHECK,N_GUARD::S(C),XQ(a)
  • Tries
    • Try
      • S(A);XQ(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::S(C)
      • Refutation
        • K(g);S_FLIGHT,XS(C)
    • Try
      • S(A);CHECK
      • Vars
        • Q(a);XS(A)::S(C),XP(f)
      • Refutation
        • K(g);S_FLIGHT,XS(C)
    • Try
      • B(G);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB1(H)
      • Refutation
        • K(g);S_FLIGHT,XB(G)
    • Try
      • R(B);
      • Threat
        • S(C),XP(f)
      • Vars
        • Q(a);CHECK,N_GUARD::S(C),XQ(a)
        • K(g);S_FLIGHT,XS(C)::QAB(H)
        • Q(a);N_GUARD,XR(B)::S(C)
        • P(f);XR(B)::S(C)
        • Q(a);N_GUARD::S(C)
        • P(f);::S(C)
      • Refutation
        • B(b);XR(B)
  • Actual
    • R(B);
    • Threat
      • S(C)
    • Vars
      • K(g);S_FLIGHT,XS(C)::B(G)
      • Q(a);N_GUARD,XR(B)::S(C),XP(f)
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