Meson Chess Problem Database

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Problem Display

PID: 145741 (1r1q1B2/n4P2/B3NP2/1r2b1QK/1pk1P3/RN3R2/8/8 w - - 0 1)

Schlotterbeck, Benno

Arbeits Deutscher Schachverbande, 1949

1r1q1B2/n4P2/B3NP2/1r2b1QK/1pk1P3/RN3R2/8/8

#2

11 + 7

14868	Pirnie Collection	2012

SOLUTION

SOUND
Sets
- 1...Qa5
  - 2.Sd2#
  - 2.Sxa5#
- 1...Qb6
  - 2.Sd2#
- 1...Qxf6
  - 2.Sd2#
  - 2.Sa5#
- 1...Qc7
  - 2.Sd2#
- 1...Qe7
  - 2.Sd2#
  - 2.Sa5#
- 1...Qd1
  - 2.Sa5#
- 1...Qd2
  - 2.Sxd2#
  - 2.Sa5#
- 1...Qd3
  - 2.Sa5#
- 1...Qd4
  - 2.Sa5#
- 1...Qd5
  - 2.Sa5#
- 1...Qd6
  - 2.Sa5#
- 1...Qd7
  - 2.Sa5#
- 1...Qc8
  - 2.Sd2#
  - 2.Sa5#
- 1...Qe8
  - 2.Sd2#
  - 2.Sa5#
- 1...Qxf8
  - 2.Sd2#
  - 2.Sa5#
- 1...Rb6
  - 2.Sa5#
- 1...Ba1
  - 2.Qc5#
- 1...Bb2
  - 2.Qc5#
- 1...Bh2
  - 2.Qc5#
- 1...Bc3
  - 2.Qc5#
- 1...Bg3
  - 2.Qc5#
- 1...Bd4
  - 2.Sd2#
- 1...Bf4
  - 2.Qc5#
- 1...Bd6
  - 2.Sd2#
  - 2.Qd5#
- 1...Bxf6
  - 2.Qc5#
- 1...Bc7
  - 2.Qc5#
Tries
- 1.Bd6?
  - threat
    - 2.Sd2#
  - 1...Qxd6
    - 2.Sa5#
  - 1...Bc3
    - 2.Qc5#
    - 2.Qd5#
  - 1...Bf4
    - 2.Qc5#
    - 2.Qd5#
  - 1...Qh8+!
- 1.Qxe5?
  - threat
    - 2.Qc5#
  - 1...Qxf8
    - 2.Sd2#
    - 2.Sa5#
    - 2.Qd5#
  - 1...Qb6
    - 2.Sd2#
    - 2.Qd5#
  - 1...Qc7
    - 2.Sd2#
    - 2.Qd5#
  - 1...Qe7
    - 2.Sd2#
    - 2.Sa5#
    - 2.Qd5#
  - 1...Qd4
    - 2.Sa5#
  - 1...Qd5
    - 2.Sa5#
    - 2.Qxd5#
  - 1...Qd6
    - 2.Sa5#
  - 1...Qc8
    - 2.Sd2#
    - 2.Sa5#
    - 2.Qd5#
  - 1...Rc8!
Keys
- 1.Sed4!
  - threat
    - 2.Qc1#
  - 1...Qxd4
    - 2.Sa5#
  - 1...Bxd4
    - 2.Sd2#
  - 1...Bxf6
    - 2.Qc5#
  - 1...Bh2
    - 2.Qc5#
  - 1...Bg3
    - 2.Qc5#
  - 1...Bf4
    - 2.Qc5#
  - 1...Bd6
    - 2.Qd5#
  - 1...Bc7
    - 2.Qc5#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
Sets
- Q(g);N_GUARD::S(B)
- Q(g);N_GUARD,P_PINR(C)::S(B)
- R(f);S_CUTQ(g)::S(B)
- B(d);OGATE,P_PINQ(E)::QAR1(E)
- B(d);P_PINQ(E),S_CUTQ(g)::S(B)
- B(d);OGATE,P_PINQ(E),XP(I)::QAR1(E)
Tries
- Try
  - B(K);
  - Threat
    - S(B)
  - Vars
    - Q(g);N_GUARD,XB(K)::S(B)
  - Refutation
    - Q(g);CHECK
- Try
  - Q(E);P_SPINQ(E),XB(d)
  - Threat
    - QAR1(E)
  - Vars
    - Q(g);N_GUARD::S(B)
  - Refutation
    - R(f);
Actual
- S(H);
- Threat
  - QAR(E)
- Vars
  - Q(g);N_GUARD,SBLOCK,XS(H)::S(B)
  - B(d);P_PINQ(E),SBLOCK,XS(H)::S(B)
  - B(d);OGATE,P_PINQ(E),XP(I)::QAR1(E)
  - B(d);OGATE,P_PINQ(E)::QAR1(E)
  - B(d);OGATE,P_PINQ(E)::QAB1(E)

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