MESON Chess Problem Database
Problem Display
PID: 90204 (b2rr1qb/2n5/Np1Q4/3np3/1R3B2/1Ppkp2B/4N3/2K1R3 w - - 0 1)
Yarmonov, Igor Petrovich
4th Prize, Die Schwalbe, 1998
#2
9 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...exf4
- 2.Sxf4#
- 1...b5
- 2.Sc5#
- 1...exf4
- Tries
- 1.Bxe5?
- threat
- 2.Sf4#
- 2.Bf5#
- 2.Rd4#
- 1...Rxd6
- 2.Bf5#
- 2.Rd4#
- 1...Rxe5
- 2.Sf4#
- 2.Rd4#
- 1...Bxe5
- 2.Bf5#
- 1...Qe6
- 2.Sf4#
- 2.Rd4#
- 1...Qf7
- 2.Rd4#
- 1...Qh7
- 2.Sf4#
- 2.Rd4#
- 1...Qg2
- 2.Sf4#
- 2.Rd4#
- 1...Qg3
- 2.Bf5#
- 2.Rd4#
- 1...Qg5
- 2.Rd4#
- 1...Qg6
- 2.Sf4#
- 2.Rd4#
- 2.Qxg6#
- 1...Qf8
- 2.Rd4#
- 1...Rf8
- 2.Rd4#
- 1...Sb5
- 2.Sf4#
- 2.Bf5#
- 1...Se6
- 2.Bf5#
- 1...Qg4!
- threat
- 1.Qc5?
- threat
- 2.Qc4#
- 1...Sxb4
- 2.Qxe3#
- 1...Sxf4
- 2.Qxc3#
- 1...bxc5
- 2.Sxc5#
- 1...Sf6
- 2.Qxe3#
- 2.Qxc3#
- 1...Se7
- 2.Qxe3#
- 2.Qxc3#
- 1...b5!
- threat
- 1.Qxb6?
- threat
- 2.Sc5#
- 1...Sxa6
- 2.Qb5#
- 2.Qxa6#
- 1...Se6
- 2.Qb5#
- 1...Qf8!
- threat
- 1.Qc6?
- threat
- 2.Qc4#
- 1...Sxb4
- 2.Sxb4#
- 1...Sxf4
- 2.Qxc3#
- 1...Sf6
- 2.Qxc3#
- 1...Se7
- 2.Qxc3#
- 1...b5
- 2.Sc5#
- 1...Bxc6!
- threat
- 1.Bxe5?
- Keys
- 1.Qxe5!
- threat
- 2.Bf5#
- 2.Rd4#
- 1...Rxe5
- 2.Rd4#
- 1...Bxe5
- 2.Bf5#
- 1...Sxb4
- 2.Sxb4#
- 1...Sxf4
- 2.Sxf4#
- 1...Qg4
- 2.Rd4#
- 1...Qe6
- 2.Rd4#
- 1...Qf7
- 2.Rd4#
- 1...Qh7
- 2.Rd4#
- 1...Qg2
- 2.Rd4#
- 1...Qg5
- 2.Rd4#
- 1...Qg6
- 2.Rd4#
- 1...Qf8
- 2.Rd4#
- 1...Rf8
- 2.Rd4#
- 2.Qe4#
- 1...Sf6
- 2.Qxc3#
- 1...Se7
- 2.Qxe3#
- 1...Sb5
- 2.Bf5#
- 1...Se6
- 2.Bf5#
- 2.Qe4#
- 2.Qf5#
- threat
- 1.Qxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 15
- REMOVED MATES = 2
- Sets
- P(e);XB(G)::S(C),XP(e)
- P(f);N_GUARD::S(H)
- Tries
- Try
- B(G);XP(e)
- Threat
- DUALS(3)
- Vars
- B(l);XB(G)::B(E)
- Q(k);::R1(F)
- R(j);::R1(F)
- S(g);::B(E)
- Refutation
- Q(k);
- Try
- Q(I);N_PINS(d)
- Threat
- QAB1(I)
- Vars
- S(d);N_GUARD,XR(F)::QAR1(I),XP(c)
- S(d);N_GUARD,XB(G)::QAR1(I),XP(a)
- P(f);XQ(I)::S(H),XP(f)
- Refutation
- P(f);
- Try
- Q(I);N_PINS(d),XP(f)
- Threat
- S(H)
- Vars
- S(g);N_GUARD::QAB(I)
- Refutation
- Q(k);
- Try
- Q(I);N_PINS(d)
- Threat
- QAB1(I)
- Vars
- S(d);XR(F)::S(H),XS(d)
- S(d);N_GUARD,XB(G)::QAR1(I),XP(a)
- S(d);N_GUARD::QAR1(I),XP(a)
- P(f);N_GUARD::S(H)
- Refutation
- B(h);XQ(I)
- Try
- Actual
- Q(I);N_PINS(d),XP(e)
- Threat
- DUALS(2)
- Vars
- R(j);XQ(I)::R1(F)
- B(l);XQ(I)::B(E)
- S(d);XR(F)::S(H),XS(d)
- S(d);XB(G)::S(C),XS(d)
- Q(k);::R1(F)
- S(d);N_GUARD,S_CUTB(l)::QAR1(I),XP(a)
- S(d);N_GUARD,S_CUTR(j)::QAR1(I),XP(c)
- S(g);::B(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).