MESON Chess Problem Database
Problem Display
PID: 248890 (8/B7/2p5/1N1r4/1pB4R/2p2k2/2RP1p2/5N1K w - - 0 1)
Onkoud, Abdelaziz
Uralski Problemist, 2007
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Sxd4#
- 1...Rc5
- 2.Sd4#
- 1...Re5
- 2.Sd4#
- 1...Rf5
- 2.Sd4#
- 1...Rg5
- 2.Sd4#
- 1...Rh5
- 2.Sd4#
- 1...Rd4
- Tries
- 1.Bxd5+?
- 1...cxd5
- 2.Sd4#
- 1...Ke2!
- 1...cxd5
- 1.Be3?
- threat
- 2.Rf4#
- 1...Rd4
- 2.Sxd4#
- 1...Rf5
- 2.Sd4#
- 1...Rh5
- 2.Sd4#
- 1...Rd3!
- threat
- 1.Rxc3+?
- 1...Rd3
- 2.Sd4#
- 1...bxc3!
- 1...Rd3
- 1.dxc3?
- threat
- 2.Be2#
- 2.Rxf2#
- 1...Rd3
- 2.Rxf2#
- 1...Rd4
- 2.Sxd4#
- 2.Be2#
- 1...Rc5
- 2.Sd4#
- 2.Be2#
- 1...Re5
- 2.Sd4#
- 2.Rxf2#
- 1...c5
- 2.Be2#
- 2.Bxd5#
- 1...Rd2!
- threat
- 1.Bxd5+?
- Keys
- 1.d3!
- threat
- 2.Rxf2#
- 1...Rd4
- 2.Sxd4#
- 1...Rc5
- 2.Sd4#
- 1...c5
- 2.Bxd5#
- threat
- 1.d3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(e);N_GUARD::S(G),XR(e)
- R(e);N_GUARD::S(G)
- R(e);N_GUARD,P_PINR(F)::S(G)
- Tries
- Try
- B(E);CHECK,XR(e)
- Vars
- P(f);XB(E)::S(G)
- Refutation
- K(c);S_FLIGHT
- Try
- B(H);
- Threat
- R1(F)
- Vars
- R(e);N_GUARD::S(G),XR(e)
- R(e);N_GUARD::S(G)
- R(e);N_GUARD,P_PINR(F)::S(G)
- Refutation
- R(e);
- Try
- R(C);CHECK,XP(b)
- Vars
- R(e);P_SPINR(e)::S(G)
- Refutation
- P(d);XR(C)
- Try
- P(D);XP(b)
- Threat
- DUALS(2)
- Vars
- R(e);::R1(C),XP(a)
- Refutation
- R(e);
- Try
- Actual
- P(D);
- Threat
- R1(C),XP(a)
- Vars
- R(e);N_GUARD::S(G),XR(e)
- R(e);N_GUARD::S(G)
- P(f);N_GUARD::B(E),XR(e)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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