MESON Chess Problem Database

Problem Display
PID: 45029 (7B/pQ2P3/p7/P3N3/2pkB3/RnN5/8/6K1 w - - 0 1)

Planck, Charles

4th Prize, English Mechanic and World of Science, 1885

(First published on Fri Apr 3 1885)

7B/pQ2P3/p7/P3N3/2pkB3/RnN5/8/6K1

#2

9 + 5

3316 Chess Problem Text Book 1887
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc3
      • 2.Sf3#
    • 1...Sa1
      • 2.Qxa7#
    • 1...Sc1
      • 2.Qxa7#
    • 1...Sd2
      • 2.Qxa7#
    • 1...Sxa5
      • 2.Qxa7#
    • 1...Sc5
      • 2.Se2#
      • 2.Sg4#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Sd3#
        • 2.Sd7#
      • 1...Kxc3
        • 2.Sf3#
      • 1...Kc5!
    • 1.Sd1?
      • threat
        • 2.Sd3#
        • 2.Sd7#
        • 2.Qd5#
      • 1...c3
        • 2.Qd5#
        • 2.Qb4#
      • 1...Kc5!
    • 1.Sc6+?
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke3!
    • 1.Sf7+?
      • 1...Kc5
        • 2.Sa4#
      • 1...Ke3!
    • 1.Qd5+?
      • 1...Kxc3
        • 2.Sc6#
      • 1...Ke3!
    • 1.Qb6+?
      • 1...Kxc3
        • 2.Sf3#
      • 1...Sc5
        • 2.Sg4#
      • 1...axb6!
    • 1.Qxa7+?
      • 1...Sc5
        • 2.Sg4#
      • 1...Kxc3!
    • 1.Qc7?
      • threat
        • 2.Sxc4#
        • 2.Sg4#
      • 1...Ke3
        • 2.Sxc4#
      • 1...Sc5
        • 2.Sg4#
      • 1...Kxc3!
    • 1.e8S?
      • 1...Kxc3
        • 2.Sf3#
      • 1...Kc5
        • 2.Sd7#
      • 1...Sxa5
        • 2.Qxa7#
      • 1...Sa1
        • 2.Qxa7#
      • 1...Sc1
        • 2.Qxa7#
      • 1...Sd2
        • 2.Qxa7#
      • 1...Sc5
        • 2.Se2#
        • 2.Sg4#
      • 1...Ke3!
  • Keys
    • 1.Qb8!
      • 1...Kxc3
        • 2.Sf3#
      • 1...Ke3
        • 2.Sxc4#
      • 1...Kc5
        • 2.Sd7#
      • 1...Sxa5
        • 2.Qxa7#
      • 1...Sa1
        • 2.Qxa7#
      • 1...Sc1
        • 2.Qxa7#
      • 1...Sd2
        • 2.Qxa7#
      • 1...Sc5
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINS(a),S_FLIGHT,XS(C)::B(I)+S(F)
    • S(a);N_GUARD::QAB(G),XP(e)
    • S(a);N_GUARD,XP(E)::QAB(G),XP(e)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P_SPINS(a),S_FLIGHT,XS(C)::B(I)+S(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);P_SPINS(a),S_FLIGHT,XS(C)::B(I)+S(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);P_SPINS(a),S_FLIGHT,XS(C)::B(I)+S(F)
        • S(a);P_SPINS(a)::B(I)+S(F)
      • Refutation
        • P(e);XQ(G)
    • Try
      • Q(G);CHECK,XP(e)
      • Vars
        • S(a);P_SPINS(a)::B(I)+S(F)
      • Refutation
        • K(c);P_SPINS(a),S_FLIGHT,XS(C)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);S_FLIGHT::S(F),XP(b)
        • S(a);::B(I)+S(F)
      • Refutation
        • K(c);P_SPINP(b),P_SPINS(a),S_FLIGHT,XS(C)
    • Try
      • P(H);
      • Vars
        • K(c);P_SPINS(a),S_FLIGHT,XS(C)::B(I)+S(F)
        • K(c);S_FLIGHT::S(F)
        • S(a);N_GUARD,XP(E)::QAB(G),XP(e)
        • S(a);N_GUARD::QAB(G),XP(e)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT,XS(C)::B(I)+S(F)
      • K(c);S_FLIGHT::S(F),XP(b)
      • K(c);S_FLIGHT::S(F)
      • S(a);N_GUARD,XP(E)::QAB(G),XP(e)
      • S(a);N_GUARD::QAB(G),XP(e)
      • S(a);SBLOCK::B(I)+S(F)
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