MESON Chess Problem Database

Problem Display
PID: 39338 (2B5/1qQ5/kN6/1b6/8/2K5/8/8 w - - 0 1)

Speckmann, Werner

Canadian Chess Chat, 1981

2B5/1qQ5/kN6/1b6/8/2K5/8/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Qxb7#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Qxc8
        • 2.Sc5#
      • 1...Bxa4!
    • 1.Sc4?
      • threat
        • 2.Qa5#
        • 2.Qb6#
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Qxc8
        • 2.Qb6#
      • 1...Bc6
        • 2.Qa5#
        • 2.Qb6#
      • 1...Bxc4!
    • 1.Sd7?
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Qxc8
        • 2.Sc5#
      • 1...Bxd7!
    • 1.Sa8?
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Qxc8!
    • 1.Bxb7+?
      • 1...Ka7
        • 2.Sc8#
        • 2.Bc8#
      • 1...Ka5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Qxc8
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(C),XQ(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C),XQ(c)
        • Q(c);N_SPINQ(c),P_PINQ(C),XB(D)::S(B)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);
      • Threat
        • DUALS(3)
      • Vars
        • K(b);P-FLIGHT::QAR1(C),XQ(c)
        • Q(c);N_SPINQ(c),XB(D)::QAR1(C)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C),XQ(c)
        • Q(c);N_SPINQ(c),P_PINQ(C),XB(D)::S(B)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),P_PINQ(C),XB(D)
    • Try
      • B(D);CHECK,XQ(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C),XQ(c)
      • Q(c);N_SPINQ(c),P_PINQ(C),XB(D)::S(B)
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