MESON Chess Problem Database
Problem Display
PID: 225653 (K2N4/1N6/2p5/1p1k2bp/p3R3/5r1n/6QB/3nR2b w - - 0 1)
Onkoud, Abdelaziz
Praca, 1995
#2
7 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qa2#
- 1...Rf4
- 2.Rxd1#
- 2.Qa2#
- 2.Qd2#
- 1...Rf5
- 2.Qa2#
- 1...Rf6
- 2.Qa2#
- 1...Rf7
- 2.Qa2#
- 1...Rf8
- 2.Qa2#
- 1...Bf4
- 2.Qg8#
- 1...Bf6
- 2.Qg8#
- 1...Sf4
- 2.Qxg5#
- 1...Rf1
- Tries
- 1.Qxh3?
- threat
- 2.Qe6#
- 2.Qd7#
- 1...Re3
- 2.Qf5#
- 2.Qe6#
- 1...Be3
- 2.Qe6#
- 1...Se3
- 2.Qe6#
- 1...Rf5
- 2.Qxf5#
- 2.Qd3#
- 1...Rf6
- 2.Qd3#
- 1...Rf7
- 2.Qe6#
- 2.Qd3#
- 1...Bf4
- 2.Qe6#
- 1...Be7
- 2.Qe6#
- 1...Rxh3!
- threat
- 1.Qd2+?
- 1...Rd3
- 2.Qxd3#
- 1...Bxd2!
- 1...Rd3
- 1.Qg3?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Re3
- 2.Qe5#
- 1...Be3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Rf4
- 2.Qd3#
- 1...Rf5
- 2.Qd6#
- 2.Qd3#
- 1...Rf6
- 2.Qe5#
- 2.Qd3#
- 1...Bf4
- 2.Qg8#
- 1...Bf6
- 2.Qd6#
- 2.Qg8#
- 1...Be7
- 2.Qe5#
- 1...Sf4
- 2.Qxg5#
- 1...Rxg3!
- threat
- 1.Qg4?
- threat
- 2.Rd4#
- 2.Re5#
- 2.Qe6#
- 2.Qd7#
- 1...Rd3
- 2.Re5#
- 2.Qf5#
- 2.Qe6#
- 2.Qd7#
- 1...Re3
- 2.Rd4#
- 2.Qf5#
- 2.Qe6#
- 1...Rf4
- 2.Qxd1#
- 2.Qe6#
- 2.Qd7#
- 1...Rf5
- 2.Rd4#
- 2.Qxf5#
- 1...Rf6
- 2.Rd4#
- 2.Re5#
- 1...Rf7
- 2.Rd4#
- 2.Re5#
- 2.Qe6#
- 1...Be3
- 2.Re5#
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 2.Qg8#
- 1...Bf6
- 2.Qe6#
- 2.Qd7#
- 2.Qg8#
- 1...Be7
- 2.Rd4#
- 2.Re5#
- 2.Qe6#
- 1...Se3
- 2.Rd4#
- 2.Re5#
- 2.Qe6#
- 1...Sf4
- 2.Qf5#
- 2.Qd7#
- 2.Qxg5#
- 1...c5
- 2.Re5#
- 2.Qe6#
- 2.Qd7#
- 1...hxg4!
- threat
- 1.Qxg5+?
- 1...Rf5
- 2.Qd2#
- 2.Qxf5#
- 1...Sxg5!
- 1...Rf5
- 1.Qxh3?
- Keys
- 1.Rb4!
- threat
- 2.Re5#
- 1...Be3
- 2.Qa2#
- 1...Bf4
- 2.Qg8#
- 1...Bf6
- 2.Qg8#
- 1...Se3
- 2.Qd2#
- 1...Sf4
- 2.Qxg5#
- threat
- 1.Rb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(c);N_GUARD::QAB(B)
- R(c);N_GUARD,P_PINS(G)::QAB(B)
- B(h);OGATE::QAB(B)
- S(d);N_GUARD,S_CUTR(c)::QAR(B),XB(h)
- Tries
- Try
- Q(B);XS(d)
- Threat
- DUALS(2)
- Vars
- B(h);::QAB1(B)
- S(a);::QAB1(B)
- R(c);OGATE::QAR2(B)
- Refutation
- R(c);XQ(B)
- Try
- Q(B);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR2(B),XR(c)
- Refutation
- B(h);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(c);::QAR1(B)
- B(h);::QAR1(B)
- S(a);::QAR1(B)
- R(c);OGATE::QAR2(B)
- B(h);OGATE::QAB(B)
- S(d);N_GUARD,S_CUTR(c)::QAR(B),XB(h)
- Refutation
- R(c);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(4)
- Refutation
- P(i);XQ(B)
- Try
- Q(B);CHECK,XB(h)
- Refutation
- S(d);XQ(B)
- Try
- Actual
- R(D);P_PINR(c)
- Threat
- R1(A)
- Vars
- B(h);::QAB(B)
- B(h);OGATE::QAB(B)
- S(a);S_CUTB(h)::QAR(B)
- S(d);N_GUARD::QAR(B),XB(h)
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).