MESON Chess Problem Database

Problem Display
PID: 256527 (8/2p2p2/2K2p2/2N1k3/1p6/1P6/2Qn2N1/8 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Wiener Schachzeitung, 1938

(First published on Sat Feb 19 1938)

8/2p2p2/2K2p2/2N1k3/1p6/1P6/2Qn2N1/8

#2

5 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qb2#
    • 1...Sb1
      • 2.Qe4#
    • 1...Sf1
      • 2.Qe4#
    • 1...Sxb3
      • 2.Qe4#
    • 1...Sf3
      • 2.Qe4#
    • 1...Sc4
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...f5
      • 2.Qb2#
  • Tries
    • 1.Qb1?
      • 1...Kd4
        • 2.Qa1#
        • 2.Qb2#
      • 1...Sxb3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...f5
        • 2.Qa1#
        • 2.Qb2#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...Sxb1!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qxf6#
      • 1...Kxf5!
    • 1.Qxd2?
      • threat
        • 2.Qf4#
        • 2.Qd5#
      • 1...f5
        • 2.Qb2#
      • 1...Kf5!
  • Keys
    • 1.Qd1!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf5
        • 2.Qh5#
      • 1...Sxb3
        • 2.Qd5#
      • 1...Sb1
        • 2.Qd5#
      • 1...Sf1
        • 2.Qd5#
      • 1...Sf3
        • 2.Qd5#
      • 1...Sc4
        • 2.Qd5#
      • 1...Se4
        • 2.Qd5#
      • 1...f5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 8
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,S_FLIGHT::QAB(A)
    • S(a);N_GUARD::QAR1(A)
    • S(a);N_GUARD,XP(C)::QAR1(A)
    • S(a);N_GUARD::QAR1(A),XS(a)
    • P(d);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD,XP(C)::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB(A),XP(d)
      • Refutation
        • K(c);P-FLIGHT,XQ(A)
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);SBLOCK::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);N_GUARD,P_SPINS(a),S_FLIGHT::QAB(A)
      • K(c);N_GUARD,P-FLIGHT,S_CUTP(d)::QAR2(A)
      • S(a);OGATE,XP(C)::QAR1(A)
      • S(a);OGATE::QAR1(A)
      • P(d);SBLOCK::QAB(A)
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