MESON Chess Problem Database

Problem Display
PID: 243322 (1B5K/2Np2PB/8/R5PQ/3kn3/3Pp3/bPrPr2b/2N5 w - - 0 1)

Andersson, Sven Tore

Shakhmaty (Riga), 1962

1B5K/2Np2PB/8/R5PQ/3kn3/3Pp3/bPrPr2b/2N5

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rd5#
    • 1...Bb1
      • 2.Rd5#
    • 1...Bd5
      • 2.Rxd5#
    • 1...Sxd2
      • 2.Sxe2#
    • 1...Sf2
      • 2.Sxe2#
    • 1...Sc3
      • 2.Ba7#
    • 1...Sxg5
      • 2.Sxe2#
    • 1...Sd6
      • 2.Sxe2#
    • 1...Sf6
      • 2.Sxe2#
    • 1...d5
      • 2.Se6#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxe4#
      • 1...Sxd2
        • 2.Sxe2#
      • 1...Sxg5
        • 2.Sxe2#
      • 1...exd2
        • 2.Sxe2#
      • 1...Bd5
        • 2.Rxd5#
      • 1...Sc5
        • 2.Sb5#
      • 1...d5
        • 2.Se6#
      • 1...Sf2
        • 2.Sxe2#
      • 1...Sc3
        • 2.Ba7#
      • 1...Sg3
        • 2.Qf6#
      • 1...Sd6
        • 2.Sxe2#
      • 1...Sf6
        • 2.Sxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(b);S_CUTB(a)::R1(E)
    • B(a);N_GUARD::R1(E)
    • B(a);N_GUARD::R1(E),XB(a)
    • S(g);XP(C)::S(A),XR(c)
    • S(g);::S(A),XR(c)
    • S(g);N_GUARD,S_CUTR(b)::B(K)
    • S(g);XP(F)::S(A),XR(c)
    • P(h);N_GUARD,S_CUTB(a)::S(H)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G),XS(g)
    • Vars
      • S(g);XP(C)::S(A),XR(c)
      • S(g);XP(F)::S(A),XR(c)
      • P(e);XP(C)::S(A),XR(c)
      • B(a);N_GUARD::R1(E),XB(a)
      • S(g);SBLOCK::S(H)
      • P(h);N_GUARD,S_CUTB(a)::S(H)
      • S(g);::S(A),XR(c)
      • S(g);N_GUARD,S_CUTR(b)::B(K)
      • S(g);N_GUARD,S_CUTB(d)::QAB(G)
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