MESON Chess Problem Database
Problem Display
PID: 207438 (2r1n3/8/8/4R3/Q3N3/8/2pR4/4k1Kn w - - 0 1)
Jada, Faud Emile
The Problemist, 1984
#2
5 + 5
SOLUTION
- SOUND
- Sets
- 1...c1S
- 2.Qd1#
- 1...c1B
- 2.Qd1#
- 1...c1S
- Tries
- 1.Rd3?
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Ke2
- 2.Sf2#
- 2.Sc5#
- 1...c1Q
- 2.Sd2#
- 1...c1S
- 2.Qd1#
- 1...c1B
- 2.Sd2#
- 2.Qd1#
- 1...Rc3
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rc5
- 2.Sxc5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sxf6#
- 1...Rc4!
- threat
- 1.Rdd5?
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Ke2
- 2.Sg5#
- 1...c1Q
- 2.Sd2#
- 1...c1S
- 2.Qd1#
- 1...c1B
- 2.Sd2#
- 2.Qd1#
- 1...Rc3
- 2.Sxc3#
- 1...Rc5
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sxc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sxf6#
- 1...Rc4!
- threat
- 1.Qxc2?
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Rd1#
- 2.Re2#
- 2.Qd1#
- 1...Rc3
- 2.Sxc3#
- 2.Rd1#
- 2.Re2#
- 2.Qd1#
- 1...Rc4
- 2.Rd1#
- 2.Re2#
- 2.Qd1#
- 1...Rc5
- 2.Sxc5#
- 2.Rd1#
- 2.Re2#
- 2.Qd1#
- 1...Rd8
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Re2#
- 2.Qb1#
- 2.Qd1#
- 2.Qc1#
- 1...Sf2
- 2.Sxf2#
- 2.Re2#
- 1...Sg3
- 2.Sxg3#
- 2.Rd1#
- 2.Qd1#
- 1...Sd6
- 2.Sxd6#
- 2.Rd1#
- 2.Re2#
- 2.Qd1#
- 1...Sf6
- 2.Sxf6#
- 2.Rd1#
- 2.Re2#
- 2.Qd1#
- 1...Rxc2!
- threat
- 1.Qb3?
- threat
- 2.Qe3#
- 1...c1S
- 2.Qd1#
- 1...Sg3
- 2.Qxg3#
- 1...Rc3!
- threat
- 1.Qa3?
- threat
- 2.Qc1#
- 2.Qe3#
- 1...c1Q
- 2.Qe3#
- 1...c1B
- 2.Qe3#
- 1...c1R
- 2.Qe3#
- 1...Rc3
- 2.Qc1#
- 1...Sf2
- 2.Qe3#
- 1...Sg3
- 2.Qc1#
- 2.Qxg3#
- 1...c1S!
- threat
- 1.Qd4?
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Qe3#
- 1...Rc3
- 2.Sxc3#
- 1...Rc5
- 2.Sxc5#
- 2.Qe3#
- 1...Sf2
- 2.Sxf2#
- 2.Qxf2#
- 2.Qe3#
- 1...Sg3
- 2.Sxg3#
- 2.Qf2#
- 1...Sd6
- 2.Sxd6#
- 2.Qe3#
- 1...Sf6
- 2.Sxf6#
- 2.Qe3#
- 1...c1S!
- threat
- 1.Rd3?
- Keys
- 1.Rd4!
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Ke2
- 2.Sg5#
- 1...c1Q
- 2.Sd2#
- 1...c1S
- 2.Qd1#
- 1...c1B
- 2.Sd2#
- 2.Qd1#
- 1...Rc3
- 2.Sxc3#
- 1...Rc5
- 2.Sxc5#
- 1...Sf2
- 2.Sxf2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sxf6#
- threat
- 1.Rd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- P(c);OGATE::QAR1(C)
- Tries
- Try
- R(B);
- Threat
- DUALS(7)
- Vars
- P(c);::R(E)+S(D)
- P(c);OGATE::QAR1(C)
- R(d);::R(E)+S(D),XR(d)
- S(b);::R(E)+S(D),XS(b)
- S(e);::R(E)+S(D),XS(e)
- Refutation
- R(d);
- Try
- R(B);
- Threat
- DUALS(7)
- Vars
- K(a);P-FLIGHT::R(E)+S(D)
- P(c);::R(E)+S(D)
- P(c);OGATE::QAR1(C)
- R(d);::R(E)+S(D),XR(d)
- S(b);::R(E)+S(D),XS(b)
- S(e);::R(E)+S(D),XS(e)
- Refutation
- R(d);
- Try
- Q(C);XP(c)
- Threat
- DUALS(10)
- Refutation
- R(d);XQ(C)
- Try
- Q(C);
- Threat
- QAR2(C)
- Vars
- P(c);OGATE::QAR1(C)
- S(b);N_GUARD::QAB(C),XS(b)
- Refutation
- R(d);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- P(c);::QAR2(C)
- R(d);::QAR2(C)
- S(b);::QAR2(C)
- Refutation
- P(c);
- Try
- Q(C);
- Threat
- DUALS(8)
- Vars
- R(d);::R(E)+S(D),XR(d)
- Refutation
- P(c);
- Try
- Actual
- R(B);
- Threat
- DUALS(7)
- Vars
- K(a);P-FLIGHT::R(E)+S(D)
- P(c);::R(E)+S(D)
- P(c);OGATE::QAR1(C)
- R(d);::R(E)+S(D),XR(d)
- S(b);::R(E)+S(D),XS(b)
- S(e);::R(E)+S(D),XS(e)
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).