MESON Chess Problem Database

Problem Display
PID: 238651 (4B3/8/K2PP3/R1N1k1NR/7B/QP3P1P/3P4/8 w - - 0 1)

Wilson, Francis Vaux

Die Schwalbe, 1970

4B3/8/K2PP3/R1N1k1NR/7B/QP3P1P/3P4/8

#2

14 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sd3#
  • Tries
    • 1.Sd3+?
      • 1...Kf6
        • 2.Qb2#
        • 2.Qa1#
      • 1...Kd4!
    • 1.Sa4+?
      • 1...Kf4
        • 2.Qb4#
      • 1...Kf6
        • 2.Qb2#
        • 2.Qa1#
      • 1...Kd4!
    • 1.Sce4+?
      • 1...Kf4
        • 2.Bg3#
      • 1...Kd4!
    • 1.Sb7+?
      • 1...Kf4
        • 2.Qb4#
        • 2.Qa4#
      • 1...Kf6
        • 2.Qb2#
        • 2.Qa1#
      • 1...Kd4!
    • 1.Sd7+?
      • 1...Kf4
        • 2.Qb4#
        • 2.Qa4#
      • 1...Kd4!
    • 1.Sge4+?
      • 1...Kd4
        • 2.Bf2#
        • 2.Bf6#
        • 2.Ra4#
        • 2.Qb2#
        • 2.Qb4#
        • 2.Qa1#
        • 2.Qa4#
      • 1...Kf4!
    • 1.Sf7+?
      • 1...Kd4
        • 2.Bf2#
        • 2.Bf6#
        • 2.Ra4#
        • 2.Qb2#
        • 2.Qb4#
        • 2.Qa1#
        • 2.Qa4#
      • 1...Kf4!
    • 1.Qb2+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Qf6#
      • 1...Kd5
        • 2.Sce4#
        • 2.Sb7#
        • 2.Sge4#
        • 2.Sf7#
      • 1...Kf5
        • 2.Sd3#
      • 1...Kxd6!
    • 1.Qa1+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Qf6#
      • 1...Kd5
        • 2.Sce4#
        • 2.Sb7#
        • 2.Sge4#
        • 2.Sf7#
      • 1...Kf5
        • 2.Sd3#
      • 1...Kxd6!
  • Keys
    • 1.e7!
      • 1...Kd4
        • 2.Sge6#
      • 1...Kf4
        • 2.Sd3#
        • 2.Sce6#
      • 1...Kd5
        • 2.Sce6#
      • 1...Kf5
        • 2.Sge6#
      • 1...Kxd6
        • 2.Sce6#
      • 1...Kf6
        • 2.Sge6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(H);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(H);CHECK
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(H);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(H);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::R(G)+S(H)
      • Refutation
        • K(a);S_FLIGHT,XP(L)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::R(G)+S(H)
      • Refutation
        • K(a);S_FLIGHT,XP(L)
  • Actual
    • P(M);
    • Vars
      • K(a);S_FLIGHT::S(I)
      • K(a);P-FLIGHT::R(G)+S(H)
      • K(a);P-FLIGHT::R(J)+S(I)
      • K(a);S_FLIGHT,XP(L)::QAB(B)+S(H)
      • K(a);S_FLIGHT::B(F)+S(I)
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