MESON Chess Problem Database
Problem Display
PID: 23915 (3R3N/4p3/4kp2/pp2r3/Pp4P1/1np2N2/2R1Q3/3K4 w - - 0 1)
Strydom, Jan
123 Chess Problems, 1996
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Rxe2#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Qxe4#
- 1...Sa1
- 2.Sd4#
- 1...Sc1
- 2.Sd4#
- 1...Sd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- 1...bxa4
- 2.Qa6#
- 1...f5
- 2.Qxe5#
- 1...Rxe2
- Tries
- 1.Ke1?
- 1...Rxe2+
- 2.Rxe2#
- 1...f5
- 2.Qxe5#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Qxe4#
- 1...Sa1
- 2.Sd4#
- 1...Sc1
- 2.Sd4#
- 1...Sd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- 1...bxa4!
- 1...Rxe2+
- 1.Ra2?
- 1...Rxe2
- 2.Rxe2#
- 1...bxa4
- 2.Qa6#
- 1...f5
- 2.Qxe5#
- 1...Sa1
- 2.Sd4#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Qxe4#
- 1...Sc1
- 2.Sd4#
- 1...Sd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- 1...c2+!
- 1...Rxe2
- 1.Rxc3?
- threat
- 2.Rc6#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- 1...bxc3!
- threat
- 1.Qc4+?
- 1...Rd5+
- 2.Qxd5#
- 1...bxc4!
- 1...Rd5+
- 1.Qe3?
- threat
- 2.Qb6#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- 1...Rxe3!
- threat
- 1.Qe4?
- threat
- 2.Qc6#
- 1...Sd4
- 2.Sxd4#
- 1...Rxe4!
- threat
- 1.axb5?
- 1...Rxe2
- 2.Rxe2#
- 1...f5
- 2.Qxe5#
- 1...Sa1
- 2.Sd4#
- 1...Re3
- 2.Qc4#
- 2.Qxe3#
- 1...Re4
- 2.Qxe4#
- 1...Sc1
- 2.Sd4#
- 1...Sd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- 1...a4!
- 1...Rxe2
- 1.Ke1?
- Keys
- 1.Qd2!
- threat
- 2.Qd7#
- 1...Re1+
- 2.Qxe1#
- 1...Sxd2
- 2.Sd4#
- 1...cxd2
- 2.Rc6#
- 1...f5
- 2.Qh6#
- 1...Rd5
- 2.Qxd5#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- threat
- 1.Qd2!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(f);N_SPINR(f),OGATE,XQ(C)::R(B),XR(f)
- R(f);OGATEB::QAR(C),XR(f)
- R(f);OGATEB::QAR2(C),XR(f)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- P(e);OGATE,XP(E)::QAR(C)
- P(h);N_GUARD::QAR1(C),XR(f)
- Tries
- Try
- K(A);P-FLIGHT,P_SPINQ(C)
- Vars
- R(f);CHECK,N_SPINR(f),OGATE,XQ(C)::R(B),XR(f)
- P(h);N_GUARD::QAR1(C),XR(f)
- R(f);::QAR(C),XR(f)
- R(f);::QAR2(C),XR(f)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- Refutation
- P(e);XP(E)
- Try
- R(B);
- Vars
- R(f);N_SPINR(f),OGATE,XQ(C)::R(B),XR(f)
- P(e);OGATE,XP(E)::QAR(C)
- P(h);N_GUARD::QAR1(C),XR(f)
- S(a);N_GUARD::S(D)
- R(f);OGATEB::QAR(C),XR(f)
- R(f);OGATEB::QAR2(C),XR(f)
- S(a);N_GUARD::S(D),XS(a)
- Refutation
- P(b);CHECK
- Try
- R(B);XP(b)
- Threat
- R(B)
- Vars
- S(a);N_GUARD::S(D),XS(a)
- S(a);N_GUARD::S(D)
- Refutation
- P(c);XR(B)
- Try
- Q(C);CHECK,N_PINR(f)
- Vars
- R(f);CHECK,N_GUARD,P_SPINR(f)::QAB1(C),XR(f)
- Refutation
- P(e);XQ(C)
- Try
- Q(C);
- Threat
- QAR(C)
- Vars
- S(a);N_GUARD::S(D),XS(a)
- S(a);N_GUARD::S(D)
- Refutation
- R(f);N_SPINR(f),XQ(C)
- Try
- Q(C);
- Threat
- QAR2(C)
- Vars
- S(a);N_GUARD::S(D),XS(a)
- Refutation
- R(f);N_SPINR(f),XQ(C)
- Try
- P(E);XP(e)
- Vars
- R(f);N_SPINR(f),OGATE,XQ(C)::R(B),XR(f)
- P(h);N_GUARD::QAR1(C),XR(f)
- S(a);N_GUARD::S(D)
- R(f);OGATEB::QAR2(C),XR(f)
- S(a);N_GUARD::S(D),XS(a)
- Refutation
- P(d);
- Try
- Actual
- Q(C);N_PINR(f)
- Threat
- QAB1(C)
- Vars
- R(f);CHECK,OGATEB::QAR(C),XR(f)
- S(a);N_GUARD,XQ(C)::S(D)
- P(b);OGATE,XQ(C)::R(B)
- P(h);OGATEB::QAR(C)
- R(f);N_GUARD,P_PINQ(C)::QAB1(C),XR(f)
- S(a);N_GUARD::S(D),XS(a)
- S(a);N_GUARD::S(D)
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).