MESON Chess Problem Database
Problem Display
PID: 93028 (8/1pKp4/b6p/2Qp4/3Nk1P1/3r4/2n3PB/1BrR1N2 w - - 0 1)
Eriksson, Finn Olof
Schackvarlden, 1937
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qe7#
- 1...Rb3
- 2.Qe7#
- 1...Re3
- 2.Qe7#
- 1...Rf3
- 2.Qe7#
- 2.gxf3#
- 1...Rh3
- 2.Qe7#
- 1...Rxd4
- 2.Rxd4#
- 2.Qxd4#
- 2.Qe7#
- 1...Se3
- 2.Sd2#
- 1...Ra3
- Tries
- 1.Sb3?
- threat
- 2.Qe7#
- 1...Rdxd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Rg3
- 2.Qd4#
- 1...Rc3
- 2.Rd4#
- 1...Sa1
- 2.Sfd2#
- 2.Sbd2#
- 1...Se1
- 2.Sfd2#
- 2.Sbd2#
- 1...Sa3
- 2.Sfd2#
- 2.Sbd2#
- 1...Se3
- 2.Sfd2#
- 2.Sbd2#
- 1...Sb4
- 2.Sfd2#
- 2.Sbd2#
- 1...Sd4
- 2.Sbd2#
- 1...d4
- 2.Qe5#
- 2.Qf5#
- 1...d6!
- threat
- 1.Sf3?
- threat
- 2.Qe7#
- 1...Rdxd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Rc3
- 2.Rd4#
- 1...Sa1
- 2.S1d2#
- 2.S3d2#
- 1...Se1
- 2.S1d2#
- 2.S3d2#
- 1...Sa3
- 2.S1d2#
- 2.S3d2#
- 1...Se3
- 2.S1d2#
- 2.S3d2#
- 1...Sb4
- 2.S1d2#
- 2.S3d2#
- 1...Sd4
- 2.S3d2#
- 1...d4
- 2.Qe5#
- 2.Qf5#
- 1...d6!
- threat
- 1.Sb5?
- threat
- 2.Sd6#
- 2.Qe7#
- 1...Rdxd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Rg3
- 2.Qd4#
- 1...d6
- 2.Sxd6#
- 1...Rc3
- 2.Sxc3#
- 2.Sd6#
- 2.Rd4#
- 1...Sa1
- 2.Sd2#
- 2.Sd6#
- 2.Bxd3#
- 1...Se1
- 2.Sd2#
- 2.Sd6#
- 1...Sa3
- 2.Sd2#
- 2.Sd6#
- 2.Bxd3#
- 1...Se3
- 2.Sd2#
- 2.Sd6#
- 2.Bxd3#
- 1...Sb4
- 2.Sd2#
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 2.Bxd3#
- 1...d4
- 2.Sd6#
- 2.Qe5#
- 2.Qf5#
- 1...Bxb5!
- threat
- 1.Sb3?
- Keys
- 1.Sf5!
- threat
- 2.Sd6#
- 2.Qe7#
- 1...Rdxd1
- 2.Qe3#
- 1...Rd2
- 2.Qe3#
- 1...Rg3
- 2.Qd4#
- 1...d6
- 2.Sxd6#
- 1...Rc3
- 2.Sd6#
- 2.Rd4#
- 1...Sa1
- 2.Sd2#
- 2.Sd6#
- 1...Se1
- 2.Sd2#
- 2.Sd6#
- 1...Sa3
- 2.Sd2#
- 2.Sd6#
- 1...Se3
- 2.Sd2#
- 2.Sd6#
- 1...Sb4
- 2.Sd2#
- 2.Sd6#
- 1...Sd4
- 2.Sd2#
- 2.Sd6#
- 1...d4
- 2.Sd6#
- 2.Qe5#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- R(c);P_SPINS(b)::QAR(H)
- S(b);P_PINQ(H),P_SPINR(c),SBLOCK::S(C)
- Tries
- Try
- S(F);
- Threat
- QAR(H)
- Vars
- R(c);N_GUARD,P_SPINS(b),XR(B)::QAR1(H)
- R(c);N_GUARD,P_SPINS(b)::QAR1(H)
- R(c);OGATE,P_PINQ(H),P_SPINS(b)::R1(B)
- S(b);P_PINQ(H),P_SPINR(c)::S(F)
- Refutation
- P(i);
- Try
- S(F);
- Threat
- QAR(H)
- Vars
- R(c);N_GUARD,P_SPINS(b),XR(B)::QAR1(H)
- R(c);N_GUARD,P_SPINS(b)::QAR1(H)
- R(c);OGATE,P_PINQ(H),P_SPINS(b)::R1(B)
- S(b);P_PINQ(H),P_SPINR(c)::S(F)
- Refutation
- P(i);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,P_SPINS(b),XR(B)::QAR1(H)
- R(c);N_GUARD,P_SPINS(b)::QAR1(H)
- P(i);::S(F),XP(i)
- Refutation
- B(f);XS(F)
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,P_SPINS(b),XR(B)::QAR1(H)
- R(c);N_GUARD,P_SPINS(b)::QAR1(H)
- P(i);::S(F),XP(i)
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).