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Problem Display

PID: 220378 (1KB4R/5p2/1pQ2N2/1p2kp2/1Rn2b2/4n1rp/1P1N3P/6B1 w - - 0 1)

Prideaux, Henry Maxwell

The Field, 1885

(First published on Sat May 23 1885)

1KB4R/5p2/1pQ2N2/1p2kp2/1Rn2b2/4n1rp/1P1N3P/6B1

#2

10 + 10

15239	Valois Notebooks	2020

SOLUTION

SOUND
Sets
- 1...Rxg1
  - 2.Sf3#
- 1...Rg2
  - 2.Sf3#
- 1...Rf3
  - 2.Sxf3#
- 1...Rg4
  - 2.Sf3#
- 1...Rg5
  - 2.Sf3#
- 1...Rg6
  - 2.Sf3#
- 1...Rg7
  - 2.Sf3#
- 1...Rg8
  - 2.Sf3#
- 1...Sd1
  - 2.Sd7#
  - 2.Rxb5#
  - 2.Re8#
- 1...Sf1
  - 2.Sd7#
  - 2.Rxb5#
  - 2.Re8#
- 1...Sc2
  - 2.Sd7#
  - 2.Rxb5#
  - 2.Re8#
- 1...Sg2
  - 2.Sd7#
  - 2.Rxb5#
  - 2.Re8#
- 1...Sg4
  - 2.Sd7#
  - 2.Rxb5#
  - 2.Re8#
- 1...Sd5
  - 2.Sd7#
- 1...Sxb2
  - 2.Sd7#
  - 2.Re8#
- 1...Sxd2
  - 2.Sd7#
  - 2.Re8#
- 1...Sa3
  - 2.Sd7#
  - 2.Re8#
- 1...Sa5
  - 2.Sd7#
  - 2.Re8#
- 1...Sd6
  - 2.Qc3#
Tries
- 1.Rxc4?
  - threat
    - 2.Sd7#
    - 2.Re8#
  - 1...Rg8
    - 2.Sf3#
    - 2.Sd7#
  - 1...Sd5
    - 2.Sd7#
    - 2.Bd4#
  - 1...bxc4!
- 1.Rxb5+?
  - 1...Sd5
    - 2.Sxc4#
    - 2.Sd7#
    - 2.Rxd5#
    - 2.Re8#
  - 1...Kd4+!
Keys
- 1.Rh4!
  - 1...Kd4+
    - 2.Qd6#
  - 1...Rxg1
    - 2.Sf3#
  - 1...Sxb2
    - 2.Sd7#
  - 1...Sxd2
    - 2.Sd7#
  - 1...Rg2
    - 2.Sf3#
  - 1...Rf3
    - 2.Sxf3#
  - 1...Rg4
    - 2.Sf3#
  - 1...Rg5
    - 2.Sf3#
  - 1...Rg6
    - 2.Sf3#
  - 1...Rg7
    - 2.Sf3#
  - 1...Rg8
    - 2.Sf3#
  - 1...Bg5
    - 2.Sd7#
  - 1...Bh6
    - 2.Sd7#
  - 1...Sd1
    - 2.Sd7#
    - 2.Rxb5#
  - 1...Sf1
    - 2.Sd7#
    - 2.Rxb5#
  - 1...Sc2
    - 2.Sd7#
    - 2.Rxb5#
  - 1...Sg2
    - 2.Sd7#
    - 2.Rxb5#
  - 1...Sg4
    - 2.Sd7#
    - 2.Rxb5#
  - 1...Sd5
    - 2.Sd7#
  - 1...Sa3
    - 2.Sd7#
  - 1...Sa5
    - 2.Sd7#
  - 1...Sd6
    - 2.Qc3#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
Sets
- R(b);N_GUARD,XB(A)::S(C)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::S(C),XR(b)
- R(b);N_GUARD,P_PINB(I)::S(C)
- S(a);::S(G)
- S(d);OGATE,SBLOCK::QAB(F)
Tries
- Try
  - R(E);XS(d)
  - Threat
    - DUALS(2)
  - Refutation
    - P(f);XR(E)
- Try
  - R(E);CHECK,XP(f)
  - Refutation
    - K(g);CHECK,P_SPINS(a),S_FLIGHT
Actual
- R(J);
- Vars
  - K(g);CHECK,P_SPINB(e),P_SPINS(a),S_FLIGHT::QAR2(F)
  - R(b);N_GUARD,XB(A)::S(C)
  - S(d);XP(B)::S(G)
  - S(d);XS(C)::S(G)
  - R(b);N_GUARD::S(C)
  - R(b);N_GUARD::S(C),XR(b)
  - R(b);N_GUARD,P_PINB(I)::S(C)
  - B(e);::S(G)
  - S(a);::S(G)
  - S(d);::S(G)
  - S(d);OGATE,SBLOCK::QAB(F)

Developed and maintained by Brian Stephenson.
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