MESON Chess Problem Database
Problem Display
PID: 7244 (b2RR2q/5p2/2r1p1Pp/4kp1N/1n1p1N2/1B1P1P2/3Q2K1/br4n1 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
4th Comm., KNSB-125 JT, 1999
#2
10 + 13
SOLUTION
- SOUND
- Sets
- 1...Se2
- 2.Qxe2#
- 1...Sxf3
- 2.Qe2#
- 1...Sh3
- 2.Qe2#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sxd3
- 2.Sxd3#
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...fxg6
- 2.Sxg6#
- 1...Se2
- Tries
- 1.Se2?
- threat
- 2.Qf4#
- 2.f4#
- 1...Sxe2
- 2.Qxe2#
- 1...Sxf3
- 2.Qf4#
- 1...Sxd3
- 2.Rd5#
- 1...f4
- 2.Qxf4#
- 1...Rf1
- 2.Qf4#
- 1...Rcc1
- 2.Qf4#
- 1...Rc2
- 2.Qf4#
- 1...Rc3
- 2.Qf4#
- 1...Rc4
- 2.Qf4#
- 1...Rc5
- 2.Qf4#
- 1...Ra6
- 2.Qf4#
- 1...Rb6
- 2.Qf4#
- 1...Rd6
- 2.Qf4#
- 1...Rc7
- 2.Qf4#
- 1...Rc8
- 2.Qf4#
- 1...Sd5
- 2.Rxd5#
- 1...Sh3!
- threat
- 1.Sh3?
- threat
- 2.Qf4#
- 2.f4#
- 1...Sxf3
- 2.Qf4#
- 2.Qe2#
- 1...Sxh3
- 2.Qe2#
- 1...Sxd3
- 2.Rd5#
- 1...f4
- 2.Qxf4#
- 1...Rf1
- 2.Qf4#
- 1...Rb2
- 2.f4#
- 1...Rcc1
- 2.Qf4#
- 1...Rc3
- 2.Qf4#
- 1...Rc4
- 2.Qf4#
- 1...Rc5
- 2.Qf4#
- 1...Ra6
- 2.Qf4#
- 1...Rb6
- 2.Qf4#
- 1...Rd6
- 2.Qf4#
- 1...Rc7
- 2.Qf4#
- 1...Rc8
- 2.Qf4#
- 1...Se2
- 2.Qxe2#
- 1...Sd5
- 2.Rxd5#
- 1...Rc2!
- threat
- 1.Sd5?
- threat
- 2.Qf4#
- 2.f4#
- 1...Sxf3
- 2.Qf4#
- 2.Qe2#
- 1...Sxd5
- 2.Rxd5#
- 1...f4
- 2.Qxf4#
- 1...Rf1
- 2.Qf4#
- 1...Rb2
- 2.f4#
- 1...Rc2
- 2.f4#
- 1...Se2
- 2.Qxe2#
- 1...Sh3
- 2.Qe2#
- 1...Sxd3!
- threat
- 1.Qe1+?
- 1...Se2
- 2.Qxe2#
- 1...Rxe1!
- 1...Se2
- 1.Se2?
- Keys
- 1.Sxe6!
- threat
- 2.Qf4#
- 2.f4#
- 1...Rxe6
- 2.Qf4#
- 1...Sxf3
- 2.Qf4#
- 2.Qe2#
- 1...Sxd3
- 2.Rd5#
- 1...f4
- 2.Qxf4#
- 1...Rf1
- 2.Qf4#
- 1...Rb2
- 2.f4#
- 1...Rcc1
- 2.Sf8#
- 2.Qf4#
- 1...Rc2
- 2.Sf8#
- 1...Rc3
- 2.Sf8#
- 2.Qf4#
- 1...Rc4
- 2.Sf8#
- 2.Qf4#
- 1...Rc5
- 2.Sf8#
- 2.Qf4#
- 1...Ra6
- 2.Qf4#
- 1...Rb6
- 2.Qf4#
- 1...Rd6
- 2.Qf4#
- 1...Rc7
- 2.Qf4#
- 1...Rc8
- 2.Sf8#
- 2.Qf4#
- 1...Se2
- 2.Qxe2#
- 1...Sh3
- 2.Qe2#
- 1...Sd5
- 2.Rxd5#
- threat
- 1.Sxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 5
- Sets
- S(c);N_GUARD::QAR(A),XS(c)
- S(c);N_GUARD,XP(E)::QAR(A)
- S(c);N_GUARD::QAR(A)
- S(d);N_GUARD::R1(I)
- S(d);N_GUARD::R1(I),XS(d)
- P(k);XP(H)::S(F),XP(k)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(c);OGATE,XS(F)::QAR(A),XS(c)
- S(c);XP(E)::QAB1(A)
- S(d);N_GUARD,XP(D)::R1(I)
- P(g);::QAB1(A),XP(g)
- R(b);::QAB1(A)
- R(h);P_PINP(E)::QAB1(A)
- S(d);N_GUARD::R1(I),XS(d)
- Refutation
- S(c);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XS(F)::QAR(A)
- S(d);N_GUARD,XP(D)::R1(I)
- P(g);::QAB1(A),XP(g)
- R(b);::QAB1(A)
- R(b);P_PINQ(A)::P(E)
- R(h);P_PINP(E)::QAB1(A)
- S(c);N_GUARD::QAR(A),XS(c)
- S(d);N_GUARD::R1(I),XS(d)
- Refutation
- R(h);P_PINP(E),P_PINQ(A)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(d);OGATE,XS(F)::R1(I),XS(d)
- P(g);::QAB1(A),XP(g)
- R(b);::QAB1(A)
- R(b);P_PINQ(A)::P(E)
- R(h);P_PINQ(A)::P(E)
- S(c);N_GUARD::QAR(A),XS(c)
- S(c);N_GUARD::QAR(A)
- Refutation
- S(d);XP(D)
- Try
- Q(A);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAR(A),XS(c)
- Refutation
- R(b);XQ(A)
- Try
- Actual
- S(F);XP(i)
- Threat
- DUALS(2)
- Vars
- R(h);P_PINP(E),P_SPINR(h),XS(F)::QAB1(A)
- S(d);N_GUARD,XP(D)::R1(I)
- P(g);::QAB1(A),XP(g)
- R(b);::QAB1(A)
- R(b);P_PINQ(A)::P(E)
- R(h);N_GUARD,P_PINP(E),P_PINQ(A)::R(J)+S(F)
- R(h);P_PINP(E)::QAB1(A)
- S(c);N_GUARD::QAR(A),XS(c)
- S(c);N_GUARD::QAR(A)
- S(d);N_GUARD::R1(I),XS(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).