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Problem Display

PID: 77440 (2R4B/3r1P2/2n2r2/R1PN4/1p1kp3/3PNnQ1/1K3P2/1B6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

stern, 1994

2R4B/3r1P2/2n2r2/R1PN4/1p1kp3/3PNnQ1/1K3P2/1B6

#2

12 + 7

6114	Problemschach-Jahrbuch (1994)	1995

SOLUTION

SOUND
Sets
- 1...exd3
  - 2.Qf4#
Tries
- 1.Sc3?
  - threat
    - 2.Se2#
    - 2.Sf5#
  - 1...exd3
    - 2.Qf4#
  - 1...Rd5
    - 2.Se2#
  - 1...Sg1
    - 2.Sc2#
    - 2.Sf5#
  - 1...Sh4
    - 2.Se2#
    - 2.Sc2#
  - 1...Sfe5
    - 2.Se2#
    - 2.Sc2#
  - 1...Sce5
    - 2.Se2#
    - 2.Sb5#
  - 1...Se7
    - 2.Se2#
    - 2.Sb5#
  - 1...bxc3+!
- 1.Sxb4?
  - threat
    - 2.Sec2#
    - 2.Sf5#
    - 2.Sxc6#
  - 1...Sxa5
    - 2.Sec2#
    - 2.Sf5#
  - 1...exd3
    - 2.Qf4#
  - 1...Rd5
    - 2.Sec2#
    - 2.Sxc6#
  - 1...Rd6
    - 2.Sec2#
    - 2.Sf5#
    - 2.Qxd6#
  - 1...Rb7
    - 2.Sc2#
    - 2.Sf5#
    - 2.Qd6#
  - 1...Rc7
    - 2.Sec2#
    - 2.Sf5#
    - 2.Qd6#
  - 1...Se1
    - 2.Sf5#
    - 2.Sxc6#
  - 1...Sh4
    - 2.Sec2#
    - 2.Sxc6#
  - 1...Sfe5
    - 2.Sec2#
  - 1...Sce5
    - 2.Sec2#
  - 1...Sa7
    - 2.Sec2#
    - 2.Sf5#
  - 1...Se7
    - 2.Sec2#
  - 1...Sb8
    - 2.Sec2#
    - 2.Sf5#
  - 1...Sd8
    - 2.Sec2#
    - 2.Sf5#
  - 1...Sxb4!
Keys
- 1.Sc7!
  - threat
    - 2.Sf5#
    - 2.Se6#
  - 1...Rxc7
    - 2.Qd6#
  - 1...Sxa5
    - 2.Sb5#
    - 2.Se6#
  - 1...exd3
    - 2.Qf4#
  - 1...Rd5
    - 2.Se6#
  - 1...Rd6
    - 2.Sf5#
    - 2.Qxd6#
  - 1...Re7
    - 2.Sf5#
    - 2.Qd6#
  - 1...Sh4
    - 2.Sc2#
    - 2.Se6#
  - 1...Sfe5
    - 2.Sc2#
  - 1...Sg5
    - 2.Sc2#
    - 2.Sf5#
  - 1...Sce5
    - 2.Sb5#
  - 1...Se7
    - 2.Sb5#
    - 2.Se6#
  - 1...Sd8
    - 2.Sf5#
    - 2.Sb5#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
Sets
- P(d);OGATEB,XP(D)::QAR2(F)
Tries
- Try
  - S(I);
  - Threat
    - DUALS(2)
  - Vars
    - P(d);OGATEB,XP(D)::QAR2(F)
    - R(g);::S(I)
  - Refutation
    - P(b);CHECK,XS(I)
- Try
  - S(I);XP(b)
  - Threat
    - DUALS(3)
  - Vars
    - P(d);OGATEB,XP(D)::QAR2(F)
    - S(a);N_SPINR(f)::S(E)
    - S(e);N_SPINR(f)::S(E)
    - S(e);::S(E)
  - Refutation
    - S(e);XS(I)
Actual
- S(I);
- Threat
  - DUALS(2)
- Vars
  - R(g);N_GUARD,XS(I)::QAR2(F)
  - P(d);OGATEB,XP(D)::QAR2(F)
  - R(g);::S(I)
  - S(a);N_SPINR(f)::S(E)
  - S(e);N_SPINR(f)::S(I)

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