MESON Chess Problem Database

Problem Display
PID: 178784 (3B4/1n3p2/3R4/1P1NkBp1/1n2P1K1/r3Q3/1b1P4/8 w - - 0 1)

Fjellstrom, Zakarias

Springaren, 1960

3B4/1n3p2/3R4/1P1NkBp1/1n2P1K1/r3Q3/1b1P4/8

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Bc7#
    • 1...Sxd5
      • 2.Rxd5#
    • 1...Sxd6
      • 2.Bf6#
    • 1...f6
      • 2.Re6#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Sc4#
      • 1...Kxd6
        • 2.Sc4#
      • 1...Sxd6
        • 2.Sd7#
      • 1...Rc3
        • 2.Qd4#
      • 1...Sa5!
    • 1.d4+?
      • 1...Kxd6
        • 2.Bc7#
        • 2.Be7#
      • 1...Bxd4!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qd4#
        • 2.Qg3#
      • 1...Kxd6
        • 2.e5#
      • 1...Rxc3
        • 2.Qd4#
      • 1...Bxc3
        • 2.Qg3#
      • 1...Sxd6
        • 2.d4#
      • 1...Sc2
        • 2.Rd5#
        • 2.Qg3#
      • 1...Sd3
        • 2.Rd5#
        • 2.Qd4#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sc6
        • 2.Rd5#
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);OGATEB,S_FLIGHT,XR(H)::B(I)
    • S(c);OGATE,XS(F)::R1(H),XS(c)
    • S(f);SBLOCK,XR(H)::B(I)
    • P(g);N_GUARD::R1(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(d);S_FLIGHT,XR(H)::S(F)
        • S(f);SBLOCK,XR(H)::S(F)
        • R(b);S_CUTB(a)::QAB1(B)
      • Refutation
        • S(f);
    • Try
      • P(A);CHECK
      • Refutation
        • B(a);XP(A)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);OGATE,S_FLIGHT,XR(H)::P(C)
      • R(b);XS(F)::QAB1(B)
      • B(a);XS(F)::QAB(B)
      • S(f);SBLOCK,XR(H)::P(A)
      • S(c);N_GUARD::R1(H),XS(c)
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