MESON Chess Problem Database

Problem Display
PID: 232443 (K3b3/PRN2pb1/5N1q/2p1nrp1/2k3p1/1p2P3/2P5/Q4n2 w - - 0 1)

Dietrich, Albert

Freie Presse, 1977

K3b3/PRN2pb1/5N1q/2p1nrp1/2k3p1/1p2P3/2P5/Q4n2

#2

8 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.cxb3#
  • Tries
    • 1.Sfd5?
      • threat
        • 2.Qc3#
      • 1...Sd3
        • 2.cxb3#
      • 1...Sf3
        • 2.Qxf1#
      • 1...Sc6
        • 2.Qa6#
      • 1...Sd7
        • 2.Qa4#
      • 1...b2
        • 2.Qa2#
      • 1...Sg6!
    • 1.Rb4+?
      • 1...cxb4
        • 2.Qd4#
      • 1...Kxb4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qc3#
      • 1...Sd3
        • 2.cxb3#
      • 1...Sf3
        • 2.Qxf1#
      • 1...Sc6
        • 2.Qa6#
      • 1...Sg6
        • 2.Sd6#
      • 1...Sd7
        • 2.Qa4#
      • 1...b2
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK::P(B),XP(b)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • S(f);SBLOCK::P(B),XP(b)
        • S(f);N_GUARD,S_CUTR(g)::QAB(A),XS(a)
        • S(f);S_CUTB(l),S_CUTQ(i)::QAB(A)
        • S(f);S_CUTB(l)::QAR2(A)
        • P(b);OGATEB::QAB(A)
      • Refutation
        • S(f);
    • Try
      • R(F);CHECK
      • Vars
        • P(e);SBLOCK,XR(F)::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,XR(F)
  • Actual
    • S(D);
    • Threat
      • QAR1(A)
    • Vars
      • S(f);SBLOCK::P(B),XP(b)
      • S(f);N_GUARD,S_CUTR(g)::QAB(A),XS(a)
      • S(f);S_CUTB(l),S_CUTQ(i)::QAB(A)
      • S(f);S_CUTQ(i)::S(D)
      • S(f);S_CUTB(l)::QAR2(A)
      • P(b);OGATEB::QAB(A)
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