MESON Chess Problem Database
Problem Display
PID: 189352 (2RNR1b1/5np1/2p2b1q/1p1k1B2/5Qnr/BPp1r2p/4N3/2K5 w - - 0 1)
Praagman, C
Probleemblad, 1971
#2
9 + 13
| 328 | Schweizerische Schachzeitung | 1972 |
SOLUTION
- SOUND
- Sets
- 1...Rd3
- 2.Be4#
- 2.Be6#
- 1...Rf3
- 2.Be4#
- 2.Be6#
- 1...Rg3
- 2.Be4#
- 2.Be6#
- 1...Re4
- 2.Bxe4#
- 1...Re5
- 2.Sxc3#
- 1...Re6
- 2.Bxe6#
- 1...Bd4
- 2.Qxd4#
- 1...Bg5
- 2.Qd4#
- 1...Be7
- 2.Qd4#
- 1...Bxd8
- 2.Qd4#
- 1...Sge5
- 2.Be6#
- 1...Sfe5
- 2.Qd4#
- 1...Sg5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sxd8
- 2.Qd6#
- 1...Sh8
- 2.Qd6#
- 1...c5
- 2.Rxc5#
- 1...Rd3
- Tries
- 1.Rxe3?
- threat
- 2.Be4#
- 2.Be6#
- 2.Qf3#
- 2.Qe4#
- 1...Qxf4
- 2.Be6#
- 1...Bxd8
- 2.Sxc3#
- 2.Rd3#
- 2.Qf3#
- 2.Qd4#
- 2.Qe4#
- 1...Sxe3
- 2.Be4#
- 2.Be6#
- 1...Sxd8
- 2.Qd6#
- 2.Qf3#
- 2.Qe4#
- 1...Be5
- 2.Be4#
- 2.Qf3#
- 2.Qe4#
- 1...Qg6
- 2.Be6#
- 2.Qf3#
- 2.Qe4#
- 1...Qh7
- 2.Be6#
- 2.Qf3#
- 2.Qe4#
- 1...Bd4
- 2.Be4#
- 2.Qf3#
- 2.Qxd4#
- 2.Qe4#
- 1...Bg5
- 2.Sxc3#
- 2.Be4#
- 2.Rd3#
- 2.Qf3#
- 2.Qd4#
- 2.Qe4#
- 1...Be7
- 2.Sxc3#
- 2.Be4#
- 2.Rd3#
- 2.Qf3#
- 2.Qd4#
- 2.Qe4#
- 1...Bh7
- 2.Be6#
- 2.Qf3#
- 2.Qe4#
- 1...Sf2
- 2.Be6#
- 1...Sh2
- 2.Be4#
- 2.Be6#
- 1...Sge5
- 2.Sxc3#
- 2.Be4#
- 2.Be6#
- 1...Sfe5
- 2.Sxc3#
- 2.Be4#
- 2.Qd4#
- 2.Qe4#
- 1...Sg5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh8
- 2.Be4#
- 2.Qd6#
- 2.Qf3#
- 2.Qe4#
- 1...c5
- 2.Be4#
- 2.Be6#
- 2.Rxc5#
- 1...b4!
- threat
- 1.Re5+?
- 1...Rxe5
- 2.Sxc3#
- 1...Sgxe5
- 2.Be6#
- 1...Sfxe5
- 2.Qd4#
- 1...Bxe5!
- 1...Rxe5
- 1.Rxe3?
- Keys
- 1.Sxc6!
- threat
- 2.Sb4#
- 1...Qxf4
- 2.Sxf4#
- 1...b4
- 2.Sxb4#
- 1...Re4
- 2.Bxe4#
- 1...Re5
- 2.Sxc3#
- 1...Be5
- 2.Se7#
- 1...Be7
- 2.Qd4#
- 1...Sge5
- 2.Be6#
- 1...Sfe5
- 2.Qd4#
- threat
- 1.Sxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(b);N_GUARD,P_PINQ(E)::B(F),XR(b)
- R(b);N_GUARD,P_PINQ(E),S_CUTB(i)::S(B),XP(a)
- B(i);N_GUARD::QAR1(E),XB(i)
- B(i);N_GUARD::QAR1(E)
- B(i);N_GUARD,XS(H)::QAR1(E)
- S(d);S_CUTR(b)::B(F)
- S(k);S_CUTB(i)::QAR1(E)
- S(k);N_GUARD::QAR1(E)
- S(k);N_GUARD::QAR1(E),XS(k)
- S(k);N_GUARD,XS(H)::QAR1(E)
- P(h);OGATE::R1(G),XP(h)
- Tries
- Try
- R(I);XR(b)
- Threat
- DUALS(4)
- Vars
- Q(j);P_PINR(I),XQ(E)::B(F)
- S(d);::B(F)
- S(k);N_GUARD::QAR1(E)
- S(k);N_GUARD::QAR1(E),XS(k)
- Refutation
- P(f);
- Try
- R(I);CHECK
- Vars
- R(b);P_PINQ(E),XR(I)::S(B),XP(a)
- S(d);XR(I)::B(F)
- S(k);XR(I)::QAR1(E)
- Refutation
- B(i);XR(I)
- Try
- Actual
- S(H);XP(h)
- Threat
- S(H)
- Vars
- Q(j);XQ(E)::S(B),XQ(j)
- P(f);::S(H),XP(f)
- R(b);N_GUARD,P_PINQ(E)::B(F),XR(b)
- R(b);N_GUARD,P_PINQ(E),S_CUTB(i)::S(B),XP(a)
- B(i);N_GUARD,S_CUTR(b)::S(H)
- B(i);N_GUARD::QAR1(E)
- S(d);S_CUTR(b)::B(F)
- S(k);S_CUTB(i)::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).