MESON Chess Problem Database

Problem Display
PID: 120833 (B2K3B/4p2Q/3p4/5P2/R1N5/pp1kN3/r1R5/2rb4 w - - 0 1)

Loepert, Fritz

Mate, 1982

B2K3B/4p2Q/3p4/5P2/R1N5/pp1kN3/r1R5/2rb4

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rd2#
    • 1...b2
      • 2.Rd2#
    • 1...e5
      • 2.fxe5 ep#
    • 1...e6
      • 2.fxe6#
  • Tries
    • 1.Se5+?
      • 1...Kxe3
        • 2.Re4#
        • 2.Qh6#
      • 1...dxe5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sb4#
      • 1...Kxc2
        • 2.f6#
      • 1...Ke4
        • 2.Se5#
      • 1...Rcxc2
        • 2.Sf4#
      • 1...Raxc2
        • 2.Sf4#
      • 1...Bxc2
        • 2.Sf4#
      • 1...bxc2
        • 2.Sf4#
      • 1...e5
        • 2.fxe5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::R1(A)
    • P(e);S_CUTR(c)::R1(A)
    • P(h);OGATE::QAB(F)+P(E),XP(h),EP
    • P(h);OGATE::QAB(F)+P(E),XP(h)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • P(g);XS(D)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(f);S_FLIGHT,XR(A)::QAB(F)+P(E)
      • K(f);S_FLIGHT::R(C)+S(D)
      • R(a);SBLOCK,XR(A)::S(B)
      • R(c);SBLOCK,XR(A)::S(B)
      • B(b);SBLOCK,XR(A)::S(B)
      • P(e);SBLOCK,XR(A)::S(B)
      • P(h);OGATE::QAB(F)+P(E),XP(h),EP
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