MESON Chess Problem Database

Problem Display
PID: 21890 (1nK4B/3R4/2p1k1p1/2p5/N1r1r2N/1Q2b3/4n1p1/5b2 w - - 0 1)

Letzen, Einar

Tidskrift for Schack, 1921

1nK4B/3R4/2p1k1p1/2p5/N1r1r2N/1Q2b3/4n1p1/5b2

#2

6 + 11

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxc5#
    • 1...Bc1
      • 2.Sxc5#
    • 1...Bd2
      • 2.Sxc5#
    • 1...Bd4
      • 2.Qxc4#
    • 1...Bf4
      • 2.Sxc5#
      • 2.Qh3#
    • 1...Bg5
      • 2.Sxc5#
    • 1...Bh6
      • 2.Sxc5#
    • 1...Sd4
      • 2.Sxc5#
  • Tries
    • 1.Qxb8?
      • threat
        • 2.Qd6#
      • 1...Rxh4
        • 2.Qe5#
      • 1...Rcd4
        • 2.Sxc5#
      • 1...Red4
        • 2.Qe5#
      • 1...Bf4!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qd6#
      • 1...Rxh4
        • 2.Qxg6#
      • 1...Sxd7
        • 2.Qxd7#
      • 1...Rcd4
        • 2.Sxc5#
      • 1...Red4
        • 2.Qxg6#
      • 1...Bd4
        • 2.Qxc4#
      • 1...Bf4
        • 2.Qh3#
      • 1...Sd4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(f);S_CUTB(d)::S(B),XP(g)
    • B(d);N_GUARD::S(B),XP(g)
    • B(d);S_CUTR(f)::QAB(A),XR(e)
    • S(b);S_CUTB(d)::S(B),XP(g)
  • Tries
    • Try
      • Q(A);N_PINR(e),XS(k)
      • Threat
        • QAR1(A)
      • Vars
        • R(f);N_GUARD,XS(C)::QAR1(A)
        • R(e);N_GUARD,S_CUTB(d)::S(B),XP(g)
        • R(f);N_GUARD::QAR1(A)
      • Refutation
        • B(d);
  • Actual
    • Q(A);N_PINR(e)
    • Threat
      • QAR1(A)
    • Vars
      • R(f);OGATE,XS(C)::QAR2(A),XP(j)
      • S(k);OGATE,XR(D)::QAB1(A),XS(k)
      • R(e);N_GUARD,S_CUTB(d)::S(B),XP(g)
      • R(f);OGATE::QAR2(A),XP(j)
      • B(d);S_CUTR(f)::QAB(A),XR(e)
      • B(d);OGATE::QAB(A)
      • S(b);S_CUTR(e)::QAR2(A),XR(f)
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