MESON Chess Problem Database
Problem Display
PID: 59306 (3R4/4B3/4R1bb/1PNp1r2/1npk4/2N1p1n1/1PP1P3/1K2Q3 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
3rd Prize, Martin, 1992-1993
#2
11 + 9
| 721 | Variantim | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Sxe2
- 2.Sxe2#
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sh5
- 2.Re4#
- 1...Sa2
- 2.Qd1#
- 1...Sxc2
- 2.Qd1#
- 1...Sa6
- 2.Qd1#
- 1...Sc6
- 2.Qd1#
- 1...Sf1
- Tries
- 1.Sd1?
- threat
- 2.Qc3#
- 2.c3#
- 1...Sxe2
- 2.Re4#
- 1...Sxc2
- 2.Qc3#
- 1...c3
- 2.Qxc3#
- 1...Rf1
- 2.Qc3#
- 1...Rf2
- 2.Qc3#
- 1...Rf3
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Re5
- 2.Qc3#
- 1...Rg5
- 2.Qc3#
- 1...Rh5
- 2.Qc3#
- 1...Rf6
- 2.Qc3#
- 1...Rf7
- 2.Qc3#
- 1...Rf8
- 2.Qc3#
- 1...Se4
- 2.Rxe4#
- 1...Sa2!
- threat
- 1.Sa2?
- threat
- 2.Qc3#
- 2.c3#
- 1...Sxe2
- 2.Re4#
- 1...Sxa2
- 2.Qd1#
- 1...Sxc2
- 2.Qc3#
- 2.Qd1#
- 1...c3
- 2.Qxc3#
- 1...Rf2
- 2.Qc3#
- 1...Rf3
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Re5
- 2.Qc3#
- 1...Rg5
- 2.Qc3#
- 1...Rh5
- 2.Qc3#
- 1...Rf6
- 2.Qc3#
- 1...Rf7
- 2.Qc3#
- 1...Rf8
- 2.Qc3#
- 1...Se4
- 2.Rxe4#
- 1...Rf1!
- threat
- 1.S3a4?
- threat
- 2.Qc3#
- 2.c3#
- 1...Sxe2
- 2.Re4#
- 1...Sxc2
- 2.Qc3#
- 2.Qd1#
- 1...c3
- 2.Qxc3#
- 1...Rf2
- 2.Qc3#
- 1...Rf3
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Re5
- 2.Qc3#
- 1...Rg5
- 2.Qc3#
- 1...Rh5
- 2.Qc3#
- 1...Rf6
- 2.Bxf6#
- 2.Qc3#
- 1...Rf7
- 2.Qc3#
- 1...Rf8
- 2.Qc3#
- 1...Se4
- 2.Rxe4#
- 1...Sa2
- 2.Qd1#
- 1...Rf1!
- threat
- 1.S3e4?
- threat
- 2.Qc3#
- 2.c3#
- 1...Sxe4
- 2.Rxe4#
- 1...Sxc2
- 2.Qc3#
- 2.Qd1#
- 1...c3
- 2.Qxc3#
- 1...Rf1
- 2.c3#
- 1...Sa2
- 2.Qd1#
- 1...Sxe2!
- threat
- 1.Rxd5+?
- 1...Sxd5
- 2.Qd1#
- 1...Rxd5!
- 1...Sxd5
- 1.Sd1?
- Keys
- 1.Sxd5!
- threat
- 2.Qc3#
- 2.c3#
- 1...Rxd5
- 2.Qc3#
- 1...Sxe2
- 2.Re4#
- 1...Sxc2
- 2.Qc3#
- 2.Qd1#
- 1...c3
- 2.Qxc3#
- 1...Rf1
- 2.Sxb4#
- 1...Rf2
- 2.Sxb4#
- 2.Qc3#
- 1...Rf3
- 2.Sxb4#
- 2.Qc3#
- 1...Rf4
- 2.Sxb4#
- 2.Qc3#
- 1...Re5
- 2.Qc3#
- 1...Rg5
- 2.Qc3#
- 1...Rh5
- 2.Qc3#
- 1...Rf6
- 2.Sxb4#
- 2.Qc3#
- 1...Rf7
- 2.Sxb4#
- 2.Qc3#
- 1...Rf8
- 2.Qc3#
- 1...Se4
- 2.Rxe4#
- 1...Sa2
- 2.Qd1#
- threat
- 1.Sxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 6
- Sets
- S(b);N_GUARD::R1(I)
- S(b);N_GUARD::R1(I),XS(b)
- S(c);N_GUARD::QAR(B)
- S(c);N_GUARD,XP(D)::QAR(B)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XP(E)::R1(I)
- S(c);XP(D)::QAB1(B)
- P(d);::QAB1(B),XP(d)
- R(g);P_PINP(D)::QAB1(B)
- S(b);N_GUARD::R1(I),XS(b)
- Refutation
- S(c);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XP(E)::R1(I)
- S(c);N_GUARD,XS(F)::QAR(B)
- P(d);::QAB1(B),XP(d)
- R(g);P_PINP(D)::QAB1(B)
- S(b);N_GUARD::R1(I),XS(b)
- Refutation
- R(g);P_PINP(D),P_PINQ(B)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XP(E)::R1(I)
- P(d);::QAB1(B),XP(d)
- R(g);P_PINP(D)::QAB1(B)
- S(b);N_GUARD::R1(I),XS(b)
- S(c);N_GUARD::QAR(B)
- Refutation
- R(g);P_PINP(D),P_PINQ(B)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XS(F)::R1(I),XS(b)
- P(d);::QAB1(B),XP(d)
- R(g);P_PINQ(B)::P(D)
- S(c);N_GUARD::QAR(B)
- Refutation
- S(b);XP(E)
- Try
- R(K);CHECK,XP(f)
- Vars
- S(c);XR(K)::QAR(B)
- Refutation
- R(g);P_PINP(D),XR(K)
- Try
- Actual
- S(F);XP(f)
- Threat
- DUALS(2)
- Vars
- R(g);P_PINP(D),P_SPINR(g),XS(F)::QAB1(B)
- S(b);N_GUARD,XP(E)::R1(I)
- P(d);::QAB1(B),XP(d)
- R(g);N_GUARD,P_PINP(D),P_PINQ(B)::R(K)+S(F),XS(c)
- R(g);P_PINP(D)::QAB1(B)
- S(b);N_GUARD::R1(I),XS(b)
- S(c);N_GUARD::QAR(B)
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).