MESON Chess Problem Database
Problem Display
PID: 133169 (1Q6/1K6/2Ppp1N1/2Bk4/2R1r3/8/B6b/8 w - - 0 1)
Dragoescu, Radu
2nd Place, Bucharest Ty., 1989
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Qxd6#
- 1...Re5
- 2.Se7#
- 2.Qxd6#
- 1...Bg1
- 2.Qxd6#
- 1...Be5
- 2.Se7#
- 1...dxc5
- 2.Se7#
- 1...e5
- 2.Qxd6#
- 2.Qg8#
- 1...Rf4
- Tries
- 1.Kb6?
- threat
- 2.Rd4#
- 1...dxc5
- 2.Se7#
- 1...Rd4
- 2.Rxd4#
- 1...Rxc4!
- threat
- 1.Bb6?
- threat
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rxc4!
- threat
- 1.Ba7?
- threat
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rxc4!
- threat
- 1.Qa7?
- threat
- 2.Rd4#
- 1...dxc5
- 2.Qxc5#
- 1...Rd4
- 2.Rxd4#
- 1...Rxc4!
- threat
- 1.Kb6?
- Keys
- 1.Qh8!
- threat
- 2.Se7#
- 1...Rxc4
- 2.Qd4#
- 1...dxc5
- 2.Rd4#
- 1...Rd4
- 2.Qxd4#
- 1...e5
- 2.Qg8#
- threat
- 1.Qh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(b);S_CUTB(a)::QAR1(G),XP(d)
- B(a);N_GUARD::QAR1(G),XP(d)
- B(a);SBLOCK::S(E)
- P(d);XB(C)::S(E)
- Tries
- Try
- K(F);P-FLIGHT
- Threat
- B(A)+R(B),DCHECK
- Vars
- P(d);XB(C)::S(E)
- R(b);::B(A)+R(B),DCHECK,XR(b)
- Refutation
- R(b);P_SPINR(b),XR(B)
- Try
- B(C);
- Threat
- B(A)+R(B),DCHECK
- Vars
- R(b);::B(A)+R(B),DCHECK,XR(b)
- Refutation
- R(b);P_SPINR(b),XR(B)
- Try
- B(C);
- Threat
- B(A)+R(B),DCHECK
- Vars
- R(b);::B(A)+R(B),DCHECK,XR(b)
- Refutation
- R(b);P_SPINR(b),XR(B)
- Try
- Q(G);
- Threat
- B(A)+R(B),DCHECK
- Vars
- P(d);OGATE,XB(C)::QAR1(G),XP(d)
- R(b);::B(A)+R(B),DCHECK,XR(b)
- Refutation
- R(b);P_SPINR(b),XR(B)
- Try
- Actual
- Q(G);
- Threat
- S(E)
- Vars
- R(b);N_GUARD,P_SPINR(b),XR(B)::QAR1(G)
- P(d);SBLOCK,XB(C)::B(A)+R(B),DCHECK
- R(b);N_GUARD::QAR1(G),XR(b)
- P(e);OGATEB::QAB(G)
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).