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Problem Display

PID: 161354 (8/npBkNK2/8/8/8/2Q5/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

8/npBkNK2/8/8/8/2Q5/8/8

#2

4 + 3

15148	Sadier Collection	2017

SOLUTION

SOUND
Tries
- 1.Bh2?
  - threat
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Kd8
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Sb5
    - 2.Qc8#
  - 1...Sc8
    - 2.Qc7#
    - 2.Qxc8#
  - 1...Sc6!
- 1.Bg3?
  - threat
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Kd8
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Sb5
    - 2.Qc8#
  - 1...Sc8
    - 2.Qc7#
    - 2.Qxc8#
  - 1...Sc6!
- 1.Bf4?
  - threat
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Kd8
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Sb5
    - 2.Qc8#
  - 1...Sc8
    - 2.Qc7#
    - 2.Qxc8#
  - 1...Sc6!
- 1.Be5?
  - threat
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Kd8
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Sb5
    - 2.Qc8#
  - 1...Sc8
    - 2.Qc7#
    - 2.Qxc8#
  - 1...Sc6!
- 1.Bb8?
  - threat
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Kd8
    - 2.Qd2#
    - 2.Qd4#
    - 2.Qd3#
    - 2.Qc7#
  - 1...Sb5
    - 2.Qc8#
  - 1...Sc8
    - 2.Qc7#
    - 2.Qxc8#
  - 1...Sc6!
- 1.Qh8?
  - threat
    - 2.Qd8#
  - 1...Sc6
    - 2.Qc8#
  - 1...Kxc7!
Keys
- 1.Sd5!
  - threat
    - 2.Sb6#
  - 1...Kc8
    - 2.Sb6#
    - 2.Qh3#
  - 1...Sc6
    - 2.Qh3#
  - 1...Sc8
    - 2.Sf6#
  - 1...b6
    - 2.Sxb6#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
Sets
Tries
- Try
  - B(B);
  - Threat
    - DUALS(4)
  - Vars
    - S(a);N_GUARD::QAB1(A)
  - Refutation
    - S(a);
- Try
  - B(B);
  - Threat
    - DUALS(4)
  - Vars
    - S(a);N_GUARD::QAB1(A)
  - Refutation
    - S(a);
- Try
  - B(B);
  - Threat
    - DUALS(4)
  - Vars
    - S(a);N_GUARD::QAB1(A)
  - Refutation
    - S(a);
- Try
  - B(B);
  - Threat
    - DUALS(4)
  - Vars
    - S(a);N_GUARD::QAB1(A)
  - Refutation
    - S(a);
- Try
  - B(B);
  - Threat
    - DUALS(4)
  - Vars
    - S(a);N_GUARD::QAB1(A)
  - Refutation
    - S(a);
- Try
  - Q(A);
  - Threat
    - QAR1(A)
  - Vars
    - S(a);N_GUARD::QAB1(A)
  - Refutation
    - K(c);P-FLIGHT,XB(B)
Actual
- S(C);
- Threat
  - S(C)
- Vars
  - S(a);SBLOCK::QAB(A)
  - S(a);SBLOCK::S(C)
  - P(b);::S(C),XP(b)

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