MESON Chess Problem Database

Problem Display
PID: 251782 (3R1b2/2P2pnK/2Q2P1R/2PNk1N1/2b3P1/2Prp1P1/q2P3n/1B6 w - - 0 1)

Fabel, Karl

Deutsche Schachzeitung, 1970

3R1b2/2P2pnK/2Q2P1R/2PNk1N1/2b3P1/2Prp1P1/q2P3n/1B6

#2

14 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Sxf7#
    • 1...Rd4
      • 2.Sxf7#
    • 1...Rxd5
      • 2.Sxf7#
    • 1...Bd6
      • 2.Qxd6#
  • Tries
    • 1.Sxe3?
      • threat
        • 2.Qe4#
      • 1...Rxe3
        • 2.d4#
      • 1...Qa8
        • 2.Sxc4#
      • 1...Rd4
        • 2.cxd4#
      • 1...Rd5
        • 2.Sxf7#
      • 1...Bd5!
    • 1.Sb4?
      • threat
        • 2.Qe4#
      • 1...Rd4
        • 2.cxd4#
      • 1...Rd5
        • 2.Sxf7#
      • 1...Bd5
        • 2.Sxd3#
      • 1...Qa8!
    • 1.Sf4?
      • threat
        • 2.Qe4#
      • 1...Rd4
        • 2.cxd4#
      • 1...Rd5
        • 2.Sxf7#
      • 1...Bd5
        • 2.Sxd3#
      • 1...Qa8!
    • 1.Se7?
      • threat
        • 2.Qe4#
      • 1...Rd4
        • 2.cxd4#
      • 1...Rd5
        • 2.Sxf7#
      • 1...Bd5
        • 2.Qd6#
      • 1...Qa8!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qe4#
      • 1...Qa8
        • 2.Sxc4#
      • 1...Rd4
        • 2.cxd4#
      • 1...Rd5
        • 2.Sxf7#
      • 1...Bd5
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);XP(B)::S(H),XP(g)
    • R(c);::S(H),XP(g)
    • R(c);XS(G)::S(H),XP(g)
    • B(i);N_GUARD::QAB1(I),XB(i)
  • Tries
    • Try
      • S(G);XP(d)
      • Threat
        • QAR1(I)
      • Vars
        • R(c);OGATE,XS(G)::P(B)
        • Q(a);N_GUARD::S(G),XB(e)
        • R(c);OGATE::P(C),XR(c)
        • R(c);S_CUTB(e)::S(H),XP(g)
      • Refutation
        • B(e);
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • R(c);OGATE::P(C),XR(c)
        • R(c);S_CUTB(e)::S(H),XP(g)
        • B(e);N_GUARD::S(G),XR(c)
      • Refutation
        • Q(a);
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • R(c);OGATE::P(C),XR(c)
        • R(c);S_CUTB(e)::S(H),XP(g)
        • B(e);N_GUARD::S(G),XR(c)
      • Refutation
        • Q(a);
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • R(c);OGATE::P(C),XR(c)
        • R(c);S_CUTB(e)::S(H),XP(g)
        • B(e);S_CUTR(c)::QAB1(I)
      • Refutation
        • Q(a);
  • Actual
    • S(G);
    • Threat
      • QAR1(I)
    • Vars
      • Q(a);N_GUARD::S(G),XB(e)
      • R(c);OGATE::P(C),XR(c)
      • R(c);S_CUTB(e)::S(H),XP(g)
      • B(e);S_CUTR(c)::S(G)
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