MESON Chess Problem Database

Problem Display
PID: 244465 (1B2N3/5p2/Bp1n4/r2R1p1n/r1P1kN2/q2pP3/1p3K2/8 w - - 0 1)

Eerkes, Allard Pieter

Parallele 50, 1947

1B2N3/5p2/Bp1n4/r2R1p1n/r1P1kN2/q2pP3/1p3K2/8

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sxd6#
    • 1...Qa2
      • 2.Sxd6#
    • 1...Qb3
      • 2.Sxd6#
    • 1...Qc3
      • 2.Sxd6#
    • 1...Rb4
      • 2.Sxd6#
    • 1...Rc5
      • 2.Sxd6#
    • 1...Sg3
      • 2.Sf6#
    • 1...Sxf4
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sg7
      • 2.Sf6#
    • 1...Sxc4
      • 2.Rd4#
    • 1...Sb5
      • 2.Re5#
    • 1...Sb7
      • 2.Rd4#
    • 1...Sc8
      • 2.Rd4#
    • 1...Sxe8
      • 2.Rd4#
  • Tries
    • 1.Sxh5?
      • threat
        • 2.Sg3#
        • 2.Shf6#
        • 2.Sef6#
      • 1...Rxc4
        • 2.Shf6#
        • 2.Sef6#
      • 1...Sxc4
        • 2.Shf6#
        • 2.Sef6#
        • 2.Rd4#
      • 1...Sxe8
        • 2.Sg3#
        • 2.Rd4#
      • 1...Qc3
        • 2.Sg3#
        • 2.Sxd6#
      • 1...f4
        • 2.Shf6#
        • 2.Sef6#
      • 1...f6
        • 2.Sg3#
        • 2.Shxf6#
        • 2.Sexf6#
      • 1...Rxd5!
  • Keys
    • 1.c5!
      • threat
        • 2.Sxd6#
      • 1...Qxc5
        • 2.Bxd3#
      • 1...Sxf4
        • 2.Sf6#
      • 1...Sxe8
        • 2.Re5#
      • 1...Sc4
        • 2.Rd4#
      • 1...Sb5
        • 2.Re5#
      • 1...Sb7
        • 2.Re5#
      • 1...Sc8
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD::S(H),XS(j)
    • R(d);S_CUTQ(b)::S(H),XS(j)
    • R(f);S_CUTQ(b)::S(H),XS(j)
    • S(h);N_GUARD::S(H)
    • S(h);N_GUARD,XS(D)::S(H)
    • S(h);N_GUARD::S(H),XS(h)
    • S(j);XP(C)::R1(E)
    • S(j);S_CUTR(f)::R1(E)
    • S(j);::R1(E)
    • S(j);XS(H)::R1(E)
  • Tries
    • Try
      • S(D);XS(h)
      • Threat
        • DUALS(3)
      • Refutation
        • R(f);XR(E)
  • Actual
    • P(C);
    • Threat
      • S(H),XS(j)
    • Vars
      • Q(b);N_GUARD,P_PINP(B),XP(C)::B(F),XP(c)
      • S(h);N_GUARD,XS(D)::S(H)
      • S(j);XS(H)::R1(E)
      • S(j);S_CUTR(d)::R1(E)
      • S(j);::R1(E)
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