MESON Chess Problem Database
Problem Display
PID: 115730 (1K2NRbq/2P5/NQ6/p2R2p1/r3k1p1/2PpnpB1/1n1p4/1r6 w - - 0 1)
Eriksson, Finn Olof
Orebro JT, 1938
#2
9 + 13
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Rxe5#
- 1...Qf6
- 2.Sxf6#
- 1...Qh1
- 2.Sf6#
- 2.Re5#
- 1...Qh2
- 2.Sf6#
- 2.Re5#
- 1...Qh3
- 2.Sf6#
- 2.Re5#
- 1...Qh4
- 2.Sf6#
- 2.Re5#
- 1...Qh5
- 2.Sf6#
- 2.Re5#
- 1...Qh6
- 2.Re5#
- 1...Qh7
- 2.Sf6#
- 2.Re5#
- 1...Bxd5
- 2.Sc5#
- 2.Sd6#
- 1...Sxd5
- 2.Sd6#
- 1...Qe5
- Tries
- 1.Rxg5?
- threat
- 2.Sc5#
- 2.Sd6#
- 2.Rf4#
- 1...Qxc3
- 2.Sd6#
- 2.Rf4#
- 1...Qe5
- 2.Rxe5#
- 1...Qd4
- 2.Rf4#
- 1...Qf6
- 2.Sc5#
- 2.Sxf6#
- 1...Qh6
- 2.Sc5#
- 2.Re5#
- 2.Rf4#
- 1...Rc4
- 2.Sd6#
- 2.Rf4#
- 1...Rd4
- 2.Sc5#
- 2.Rf4#
- 1...Bf7
- 2.Sc5#
- 2.Sd6#
- 1...Sbc4
- 2.Sc5#
- 2.Rf4#
- 1...Sed1
- 2.Sd6#
- 2.Rf4#
- 1...Sf1
- 2.Sd6#
- 2.Rf4#
- 1...Sc2
- 2.Sd6#
- 2.Rf4#
- 1...Sg2
- 2.Sd6#
- 1...Sec4
- 2.Rf4#
- 1...Sd5
- 2.Sd6#
- 1...Sf5!
- threat
- 1.Rf4+?
- 1...Kxd5
- 2.Qd6#
- 1...gxf4!
- 1...Kxd5
- 1.Qe6+?
- 1...Qe5
- 2.Sc5#
- 2.Sd6#
- 2.Sf6#
- 2.Rxe5#
- 2.Qxe5#
- 1...Bxe6!
- 1...Qe5
- 1.Qb7?
- threat
- 2.Sc5#
- 2.Sd6#
- 2.Rd4#
- 2.Re5#
- 1...Qxc3
- 2.Sd6#
- 1...Bxd5
- 2.Sc5#
- 2.Sd6#
- 1...Sed1
- 2.Re5#
- 1...Sf1
- 2.Re5#
- 1...Sc2
- 2.Re5#
- 1...Sg2
- 2.Re5#
- 1...Sec4
- 2.Re5#
- 1...Sf5
- 2.Re5#
- 1...Qd4
- 2.Sd6#
- 2.Rxd4#
- 2.Re5#
- 1...Qe5
- 2.Sc5#
- 2.Rd4#
- 2.Rxe5#
- 1...Qf6
- 2.Sc5#
- 2.Sxf6#
- 2.Re5#
- 1...Qh6
- 2.Sc5#
- 2.Rd4#
- 2.Re5#
- 1...Rc4
- 2.Sd6#
- 2.Rd4#
- 2.Re5#
- 1...Rd4
- 2.Sc5#
- 2.Sd6#
- 2.Rxd4#
- 2.Re5#
- 1...Bf7
- 2.Sc5#
- 2.Sd6#
- 2.Re5#
- 1...Sbc4
- 2.Sc5#
- 2.Rd4#
- 2.Re5#
- 1...Sxd5!
- threat
- 1.Rxg5?
- Keys
- 1.Rf6!
- threat
- 2.Re5#
- 1...Kxd5
- 2.Qc6#
- 1...Qxf6
- 2.Sxf6#
- 1...Bxd5
- 2.Sc5#
- 1...Sxd5
- 2.Sd6#
- 1...Sbc4
- 2.Rd4#
- 1...Sec4
- 2.Qd4#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(m);N_GUARD,P_PINP(F)::R1(C),XQ(m)
- Q(m);N_GUARD::S(H),XQ(m)
- Q(m);N_GUARD::R1(C)
- S(e);SBLOCK,XR(C)::S(H)
- Tries
- Try
- R(C);XP(k)
- Threat
- DUALS(3)
- Vars
- Q(m);N_GUARD,P_PINP(F)::R1(C),XQ(m)
- Q(m);::R1(I)
- S(e);::S(H)
- S(e);::R1(I)
- Refutation
- S(e);
- Try
- R(I);CHECK
- Vars
- K(h);S_FLIGHT,XR(C)::QAR1(E)
- Refutation
- P(k);XR(I)
- Try
- Q(E);CHECK
- Refutation
- B(l);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- Q(m);XP(A)::S(H)
- S(e);::QAB(E)+R(C),DCHECK
- Refutation
- S(e);P_SPINS(e),XR(C)
- Try
- Actual
- R(I);
- Threat
- R1(C)
- Vars
- K(h);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
- Q(m);XR(I)::S(H),XQ(m)
- B(l);P_PINS(H),SBLOCK,XR(C)::S(D)
- S(e);SBLOCK,XR(C)::S(H)
- S(b);P_PINQ(E),S_CUTR(g)::R1(C)
- S(e);S_CUTR(g)::QAR1(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).