MESON Chess Problem Database

Problem Display
PID: 783 (8/2p5/p1R2p2/P4P2/3Pk2B/2p1p2P/2N1N3/1Q1K4 w - - 0 1)

Mansfield, Comins

1st HM., British Chess Magazine, 1961

8/2p5/p1R2p2/P4P2/3Pk2B/2p1p2P/2N1N3/1Q1K4

#2

10 + 6

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Se1#
      • 2.Sb4#
    • 1...Kf3
      • 2.Se1#
    • 1...Kd5
      • 2.Sb4#
    • 1...Kxf5
      • 2.Sxe3#
  • Tries
    • 1.Ke1?
      • 1...Kd3
        • 2.Sb4#
      • 1...Kd5
        • 2.Sb4#
      • 1...Kxf5
        • 2.Sxe3#
      • 1...Kf3!
    • 1.Bg3?
      • 1...Kd3
        • 2.Se1#
        • 2.Sb4#
      • 1...Kf3
        • 2.Se1#
      • 1...Kd5
        • 2.Sb4#
      • 1...Kxf5!
    • 1.Bxf6?
      • 1...Kd3
        • 2.Se1#
        • 2.Sb4#
      • 1...Kd5
        • 2.Sb4#
      • 1...Kxf5
        • 2.Sxe3#
      • 1...Kf3!
    • 1.Rc5?
      • 1...Kd3
        • 2.Se1#
        • 2.Sb4#
      • 1...Kf3
        • 2.Se1#
      • 1...c6!
    • 1.Qb5?
      • 1...Kf3
        • 2.Qd5#
      • 1...axb5!
  • Keys
    • 1.Qb7!
      • 1...Kd3
        • 2.Rxc3#
      • 1...Kf3
        • 2.Rxc7#
      • 1...Kd5
        • 2.Sxc3#
      • 1...Kxf5
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(C)
    • K(c);S_FLIGHT,XP(I)::QAB(A)+S(C),DCHECK,XP(b)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(A)+S(C),DCHECK
        • K(c);S_FLIGHT::S(C)
        • K(c);S_FLIGHT,XP(I)::QAB(A)+S(C),DCHECK,XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • K(c);S_FLIGHT,XP(I)
    • Try
      • B(G);XP(e)
      • Vars
        • K(c);S_FLIGHT::S(C)
        • K(c);S_FLIGHT,XP(I)::QAB(A)+S(C),DCHECK,XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(J);
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::R1(J),XP(a)
      • K(c);S_FLIGHT::QAB(A)+R(J),XP(f)
      • K(c);S_FLIGHT::S(D),XP(a)
      • K(c);S_FLIGHT,XP(I)::R1(J),XP(e)
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