MESON Chess Problem Database

Problem Display
PID: 10124 (K7/3pp3/2Pk2n1/Q7/2RN4/1b1N3B/3R4/3q4 w - - 0 1)

Issler, Werner

2nd Prize, Die Schwalbe, 1962

K7/3pp3/2Pk2n1/Q7/2RN4/1b1N3B/3R4/3q4

#2

8 + 6

21 Deutsche Schachblatter 1962
3747 FIDE Album (1962-1964) 1968
15257 Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) 1968
6479 Problemschach (Sidler) 1968
5862 An ABC of Chess Problems 1970
14668 Deceptive Chess Problems 1983
4640 Chess Wizardry: The New ABC of Chess Problems 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sf8
      • 2.Qe5#
    • 1...Sh8
      • 2.Qe5#
    • 1...dxc6
      • 2.Rxc6#
      • 2.Qd8#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sf7#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...Sxe5
        • 2.Sb5#
      • 1...e6
        • 2.Sf5#
      • 1...Qf3
        • 2.Sdxf3#
      • 1...Qf1
        • 2.Se2#
      • 1...Sh8!
    • 1.Qb4+?
      • 1...Kc7
        • 2.Qb8#
      • 1...Kd5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qc5#
      • 1...dxc6
        • 2.Qd8#
      • 1...dxe6
        • 2.Qd8#
      • 1...Qg4
        • 2.Sdf4#
      • 1...Qh5
        • 2.Se5#
      • 1...Qa1
        • 2.Sb2#
      • 1...Qg1
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • S(d);N_GUARD::QAB1(F)
    • S(d);N_GUARD::QAB1(F),XS(d)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(b);XR(D)::S(B),XB(b)
        • S(d);SBLOCK,XS(B)::R(A)+S(E),DCHECK
        • P(f);SBLOCK::R(A)+S(E),DCHECK
        • Q(a);N_GUARD,P_PINP(G)::R(A)+S(E),XQ(a)
        • Q(a);N_GUARD::R(A)+S(E)
      • Refutation
        • S(d);
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(F)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAB1(F)
    • Vars
      • P(e);OGATEB,XP(G)::QAR2(F)
      • P(e);OGATEB,XS(E)::QAR2(F)
      • Q(a);N_GUARD::R(A)+S(B)
      • Q(a);N_GUARD,P_PINQ(F)::R(A)+S(B)
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