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Problem Display

PID: 153065 (8/8/1R1pKpR1/2P5/rp3k1r/1p2p2p/1B5N/1B6 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1947

8/8/1R1pKpR1/2P5/rp3k1r/1p2p2p/1B5N/1B6

#2

7 + 9

15256	TRD Scrapbook	2014

SOLUTION

SOUND
Sets
- 1...Ra1
  - 2.Rxb4#
- 1...Ra2
  - 2.Rxb4#
- 1...Ra3
  - 2.Rxb4#
- 1...Ra5
  - 2.Rxb4#
- 1...Ra6
  - 2.Rxb4#
- 1...Ra7
  - 2.Rxb4#
- 1...Ra8
  - 2.Rxb4#
- 1...Rg4
  - 2.Rxg4#
- 1...Rh5
  - 2.Rg4#
- 1...Rh6
  - 2.Rg4#
- 1...Rh7
  - 2.Rg4#
- 1...Rh8
  - 2.Rg4#
- 1...e2
  - 2.Bc1#
Tries
- 1.Kxd6?
  - 1...Rg4
    - 2.Rxg4#
  - 1...e2
    - 2.Bc1#
  - 1...Ra1
    - 2.Rxb4#
  - 1...Ra2
    - 2.Rxb4#
  - 1...Ra3
    - 2.Rxb4#
  - 1...Ra5
    - 2.Rxb4#
  - 1...Ra7
    - 2.Rxb4#
  - 1...Ra8
    - 2.Rxb4#
  - 1...Rh5
    - 2.Rg4#
  - 1...Rh6
    - 2.Rg4#
  - 1...Rh7
    - 2.Rg4#
  - 1...Rh8
    - 2.Rg4#
  - 1...f5
    - 2.Be5#
  - 1...Ra6!
- 1.Kxf6?
  - 1...dxc5
    - 2.Be5#
  - 1...Rg4
    - 2.Rxg4#
  - 1...e2
    - 2.Bc1#
  - 1...Ra1
    - 2.Rxb4#
  - 1...Ra2
    - 2.Rxb4#
  - 1...Ra3
    - 2.Rxb4#
  - 1...Ra5
    - 2.Rxb4#
  - 1...Ra6
    - 2.Rxb4#
  - 1...Ra7
    - 2.Rxb4#
  - 1...Ra8
    - 2.Rxb4#
  - 1...Rh5
    - 2.Rg4#
  - 1...Rh7
    - 2.Rg4#
  - 1...Rh8
    - 2.Rg4#
  - 1...d5
    - 2.Be5#
  - 1...Rh6!
- 1.Rxd6?
  - threat
    - 2.Rd4#
  - 1...Rg4
    - 2.Rxg4#
  - 1...e2
    - 2.Bc1#
  - 1...Ra6!
Keys
- 1.cxd6!
  - 1...Rg4
    - 2.Rxg4#
  - 1...e2
    - 2.Bc1#
  - 1...Ra1
    - 2.Rxb4#
  - 1...Ra2
    - 2.Rxb4#
  - 1...Ra3
    - 2.Rxb4#
  - 1...Ra5
    - 2.Rxb4#
  - 1...Ra6
    - 2.Rxb4#
  - 1...Ra7
    - 2.Rxb4#
  - 1...Ra8
    - 2.Rxb4#
  - 1...Rh5
    - 2.Rg4#
  - 1...Rh6
    - 2.Rg4#
  - 1...Rh7
    - 2.Rg4#
  - 1...Rh8
    - 2.Rg4#
  - 1...f5
    - 2.Be5#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- R(d);N_GUARD::R(E),XP(e)
- R(g);N_GUARD::R1(G),XR(g)
- R(g);N_GUARD::R1(G)
- P(b);OGATEB::B(B)
Tries
- Try
  - K(F);P-FLIGHT,XP(h)
  - Vars
    - R(g);N_GUARD::R1(G),XR(g)
    - P(b);OGATEB::B(B)
    - R(d);N_GUARD::R(E),XP(e)
    - R(g);N_GUARD::R1(G)
    - P(i);N_GUARD::B(B)
  - Refutation
    - R(d);P_PINR(E)
- Try
  - K(F);P-FLIGHT,XP(i)
  - Vars
    - P(h);N_GUARD,XP(D)::B(B)
    - R(g);N_GUARD::R1(G),XR(g)
    - P(b);OGATEB::B(B)
    - R(d);N_GUARD::R(E),XP(e)
    - R(g);N_GUARD::R1(G)
    - P(h);N_GUARD::B(B)
  - Refutation
    - R(g);P_PINR(G)
- Try
  - R(E);XP(h)
  - Threat
    - R(E)
  - Vars
    - R(g);N_GUARD::R1(G),XR(g)
    - P(b);OGATEB::B(B)
  - Refutation
    - R(d);P_PINR(E)
Actual
- P(D);XP(h)
- Vars
  - R(g);N_GUARD::R1(G),XR(g)
  - P(b);OGATEB::B(B)
  - R(d);N_GUARD::R(E),XP(e)
  - R(g);N_GUARD::R1(G)
  - P(i);N_GUARD::B(B)

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