MESON Chess Problem Database
Problem Display
PID: 245402 (b4R2/3pK3/1B1PB1pp/3pk1pR/q2NN3/1Ppp4/2n2nQb/8 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
Hlas l'udu, 1987
(First published on Thu Oct 29 1987)
#2
10 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sxe4
- 2.Sf3#
- 1...dxe4
- 2.Qxh2#
- 1...gxh5
- 2.Rf5#
- 1...Sxe4
- Tries
- 1.Sxf2?
- threat
- 2.Sxd3#
- 2.Sg4#
- 2.Sf3#
- 2.Qxh2#
- 1...Sxd4
- 2.Sxd3#
- 2.Sg4#
- 2.Qxh2#
- 1...gxh5
- 2.Sxd3#
- 2.Sf3#
- 2.Rf5#
- 2.Qxh2#
- 1...Qb5
- 2.Sg4#
- 2.Sf3#
- 2.Qxh2#
- 1...Qc4
- 2.Sg4#
- 2.Sf3#
- 2.Qxh2#
- 1...Qa6
- 2.Sg4#
- 2.Sf3#
- 2.Qxh2#
- 1...Bg1
- 2.Sxd3#
- 2.Sg4#
- 2.Sf3#
- 2.Qg3#
- 1...Bg3
- 2.Sxd3#
- 2.Sg4#
- 2.Sf3#
- 2.Qxg3#
- 1...Bf4
- 2.Sxd3#
- 2.Sg4#
- 2.Sf3#
- 1...Se1
- 2.Sg4#
- 2.Qxh2#
- 1...Se3
- 2.Sxd3#
- 2.Sf3#
- 2.Qxh2#
- 1...Sb4
- 2.Sg4#
- 2.Sf3#
- 2.Qxh2#
- 1...d2
- 2.Sd3#
- 2.Sg4#
- 2.Sf3#
- 2.Qxh2#
- 1...Qxd4!
- threat
- 1.Sxc3?
- threat
- 2.Sf3#
- 2.Qxh2#
- 1...Sxd4
- 2.Qxh2#
- 1...Bg1
- 2.Sf3#
- 2.Qg3#
- 1...Bg3
- 2.Sf3#
- 2.Qxg3#
- 1...Bf4
- 2.Sf3#
- 1...Se1
- 2.Qxh2#
- 1...Sh1
- 2.Sf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Sg4
- 2.Sf3#
- 1...Qxd4!
- threat
- 1.Sc5?
- threat
- 2.Sf3#
- 1...Kxd4
- 2.Sxd7#
- 1...Qxd4
- 2.Sxd7#
- 1...Sxd4
- 2.Qxh2#
- 1...Se1!
- threat
- 1.Sxg5?
- threat
- 2.Sdf3#
- 2.Qxh2#
- 1...Sxd4
- 2.Qxh2#
- 1...hxg5
- 2.Rxg5#
- 1...Bg1
- 2.Sdf3#
- 2.Qg3#
- 1...Bg3
- 2.Sdf3#
- 2.Qxg3#
- 1...Bf4
- 2.Sdf3#
- 2.Sf7#
- 1...Se1
- 2.Qxh2#
- 1...Sh1
- 2.Sdf3#
- 1...Sh3
- 2.Sdf3#
- 1...Se4
- 2.Sdf3#
- 2.Sgf3#
- 1...Sg4
- 2.Sdf3#
- 1...Qxd4!
- threat
- 1.Sxf2?
- Keys
- 1.Sf6!
- threat
- 2.Qxh2#
- 1...Kf4
- 2.Sg4#
- 1...Qxd4
- 2.Sxd7#
- 1...Bg1
- 2.Qg3#
- 1...Bg3
- 2.Qxg3#
- 1...Bf4
- 2.Sf3#
- 1...Sh1
- 2.Sg4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 2
- Sets
- S(b);SBLOCK,XS(D)::S(C)
- P(g);SBLOCK,XS(D)::QAB(A),XB(c)
- P(j);N_GUARD,N_SPINP(i),XR(E)::R1(J)
- Tries
- Try
- S(D);XS(b)
- Threat
- DUALS(4)
- Refutation
- Q(f);XS(C)
- Try
- S(D);XP(d)
- Threat
- DUALS(2)
- Vars
- S(a);XS(C)::QAB(A),XB(c)
- B(c);::S(C)
- S(a);::QAB(A),XB(c)
- S(b);::S(C)
- Refutation
- Q(f);XS(C)
- Try
- S(D);
- Threat
- S(C)
- Vars
- K(h);N_SPINP(i),S_FLIGHT,XS(C)::B(F)+S(D),XP(l)
- Q(f);N_GUARD,XS(C)::S(D),XP(l)
- S(a);SBLOCK,XS(C)::QAB(A),XB(c)
- Refutation
- S(a);
- Try
- S(D);XP(i)
- Threat
- DUALS(2)
- Vars
- S(a);XS(C)::QAB(A),XB(c)
- P(k);OGATE,P_SPINP(k),XS(D)::R(E),XP(k)
- S(a);::QAB(A),XB(c)
- S(b);::S(C)
- Refutation
- Q(f);XS(C)
- Try
- Actual
- S(D);
- Threat
- QAB(A),XB(c)
- Vars
- K(h);N_SPINP(i),S_FLIGHT::R(J)+S(D)
- Q(f);N_GUARD,XS(C)::S(D),XP(l)
- B(c);N_GUARD::QAB(A)
- B(c);N_GUARD::QAB(A),XB(c)
- B(c);SBLOCK::S(C)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(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).