MESON Chess Problem Database
Problem Display
PID: 235195 (8/8/5p2/RrN1pk1b/5N1K/3R2P1/8/1B6 w - - 0 1)
Haring, Jacobus
Schach, 1983
#2
7 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxa5
- 2.Rd5#
- 1...exf4
- 2.Rd5#
- 1...e4
- 2.Rd5#
- 1...Rxa5
- Tries
- 1.Rd1+?
- 1...e4
- 2.Rd5#
- 1...Rxb1!
- 1...e4
- 1.Rd2+?
- 1...e4
- 2.Rd5#
- 1...Rxb1!
- 1...e4
- 1.Rd4+?
- 1...e4
- 2.Rd5#
- 1...Rxb1!
- 1...e4
- 1.Rd6+?
- 1...e4
- 2.Rd5#
- 1...Rxb1!
- 1...e4
- 1.Rd7+?
- 1...e4
- 2.Rd5#
- 1...Rxb1!
- 1...e4
- 1.Rd8+?
- 1...e4
- 2.Rd5#
- 1...Rxb1!
- 1...e4
- 1.Rd1+?
- Keys
- 1.Sb7!
- threat
- 2.Sd6#
- 1...Ke4
- 2.Sd6#
- 1...Rxb7
- 2.Rb3#
- 1...exf4
- 2.Re3#
- 1...Rd5
- 2.Rdxd5#
- 1...Rb6
- 2.Rb3#
- 1...e4
- 2.Rxb5#
- threat
- 1.Sb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD,XR(F)::B(A)+R(B)
- P(b);XS(D)::B(A)+R(B),DCHECK
- P(b);S_CUTR(a)::R(B)
- Tries
- Try
- R(B);CHECK
- Vars
- P(b);P_SPINP(b),S_CUTR(a)::R(B)
- Refutation
- R(a);XB(A)
- Try
- R(B);CHECK
- Vars
- P(b);P_SPINP(b),S_CUTR(a)::R(B)
- Refutation
- R(a);XB(A)
- Try
- R(B);CHECK
- Vars
- P(b);P_SPINP(b),S_CUTR(a)::R(B)
- Refutation
- R(a);XB(A)
- Try
- R(B);CHECK
- Vars
- P(b);P_SPINP(b),S_CUTR(a)::R(B)
- Refutation
- R(a);XB(A)
- Try
- R(B);CHECK
- Vars
- P(b);P_SPINP(b),S_CUTR(a)::R(B)
- Refutation
- R(a);XB(A)
- Try
- R(B);CHECK
- Vars
- P(b);P_SPINP(b),S_CUTR(a)::R(B)
- Refutation
- R(a);XB(A)
- Try
- Actual
- S(G);
- Threat
- S(G)
- Vars
- K(c);S_FLIGHT::S(G)
- R(a);P_SPINP(b),XS(G)::B(A)+R(B)
- P(b);N_GUARD,P_SPINR(a),XS(D)::B(A)+R(B)
- R(a);N_GUARD::B(A)+R(B),XR(a)
- R(a);P_SPINP(b)::B(A)+R(B)
- P(b);OGATEB,P_SPINR(a),SBLOCK::R(F),XR(a)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).