MESON Chess Problem Database

Problem Display
PID: 119836 (8/3QR3/8/3P2K1/1Ppk3p/6N1/3p3r/4N3 w - - 0 1)

Ferber, Eugene

Deutsche Schachzeitung, 1901

8/3QR3/8/3P2K1/1Ppk3p/6N1/3p3r/4N3

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Se2#
    • 1...Re2
      • 2.Sxe2#
    • 1...Rh3
      • 2.Se2#
    • 1...c3
      • 2.Re4#
  • Tries
    • 1.Qg4+?
      • 1...Kxd5
        • 2.Qd7#
      • 1...Kc3!
    • 1.Qa7+?
      • 1...Kxd5
        • 2.Qc5#
        • 2.Qd7#
      • 1...Kc3!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sc2#
        • 2.Sf5#
      • 1...Kxe3
        • 2.Qa7#
      • 1...dxe1Q
        • 2.Sf5#
      • 1...dxe1S
        • 2.Sf5#
      • 1...dxe1B
        • 2.Sf5#
      • 1...dxe1R
        • 2.Sf5#
      • 1...hxg3
        • 2.Sc2#
      • 1...c3
        • 2.Re4#
      • 1...d1Q
        • 2.Sf5#
      • 1...d1S
        • 2.Sf5#
      • 1...d1B
        • 2.Sf5#
      • 1...d1R
        • 2.Sf5#
      • 1...Rf2
        • 2.Sc2#
      • 1...Rg2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::S(B)
    • R(b);N_GUARD::S(B),XR(b)
    • P(c);SBLOCK::R1(G)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);OGATEB,P-FLIGHT,XP(D)::QAR2(F)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(G);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);S_FLIGHT,XR(G)::QAB(F)
      • P(a);XS(A)::S(B)
      • P(e);XS(B)::S(A)
      • P(c);SBLOCK::R1(G)
      • P(a);::S(B)
      • R(b);::S(A)
      • R(b);P_PINS(B)::S(A)
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