MESON Chess Problem Database

Problem Display
PID: 157262 (1B6/5b2/7b/3R2n1/4k3/R4N2/B2Pr2r/2KN2nq w - - 0 1)

Lincoln, Robert A

Die Schwalbe, 1989

1B6/5b2/7b/3R2n1/4k3/R4N2/B2Pr2r/2KN2nq

#2

8 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.Ra4#
    • 1...Rxd2
      • 2.Re3#
    • 1...Ref2
      • 2.Re3#
    • 1...Reg2
      • 2.Re3#
    • 1...Re3
      • 2.Rxe3#
    • 1...Bg7
      • 2.Sxg5#
    • 1...Bf8
      • 2.Sxg5#
    • 1...Bxd5
      • 2.Bb1#
    • 1...S1xf3
      • 2.d3#
    • 1...S5xf3
      • 2.Sc3#
  • Tries
    • 1.Sf2+?
      • 1...Rexf2
        • 2.Re3#
      • 1...Rhxf2!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Re5#
      • 1...Qxf3
        • 2.Ra4#
      • 1...Bxd5
        • 2.Bb1#
      • 1...S1xf3
        • 2.d3#
      • 1...S5xf3
        • 2.Sc3#
      • 1...Re3
        • 2.Rxe3#
      • 1...Bg7
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(b);SBLOCK,XS(F)::R(E)
    • R(c);N_GUARD,XP(D)::R1(E)
    • R(c);N_GUARD::R1(E)
    • R(c);N_GUARD::R1(E),XR(c)
    • B(g);N_GUARD::S(F),XS(f)
    • B(h);SBLOCK,XR(G)::B(C)
    • S(a);P_PINS(B),SBLOCK,XS(F)::P(D)
    • S(f);P_PINP(D),SBLOCK,XS(F)::S(B)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • R(c);XS(B)::R1(E)
      • Refutation
        • R(d);XS(B)
  • Actual
    • B(H);
    • Threat
      • R1(G)
    • Vars
      • Q(b);SBLOCK,XS(F)::R(E)
      • B(h);SBLOCK,XR(G)::B(C)
      • S(a);P_PINS(B),SBLOCK,XS(F)::P(D)
      • S(f);P_PINP(D),SBLOCK,XS(F)::S(B)
      • R(c);N_GUARD::R1(E),XR(c)
      • B(g);N_GUARD::S(F),XS(f)
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