MESON Chess Problem Database
Problem Display
PID: 237791 (B3r3/B1p1Q2p/nrR4K/4p3/1pR5/4k2n/2P1ppP1/1N5N w - - 0 1)
Hannelius, Jan Ingvar
Arbejder-Skak, 1948
#2
10 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxa8
- 2.Qxe5#
- 1...Rb8
- 2.Qxe5#
- 1...Rc8
- 2.Qxe5#
- 1...Rd8
- 2.Qxe5#
- 1...Rf8
- 2.Qxe5#
- 1...Rg8
- 2.Qxe5#
- 1...Rh8
- 2.Qxe5#
- 1...Sg1
- 2.Qg5#
- 1...Sg5
- 2.Qxg5#
- 1...Sc5
- 2.Qxc5#
- 1...Sb8
- 2.Qc5#
- 1...e4
- 2.Rxe4#
- 1...Rxa8
- Tries
- 1.Bxb6+?
- 1...Sc5
- 2.Bxc5#
- 2.Qxc5#
- 1...cxb6!
- 1...Sc5
- 1.Rxb6?
- threat
- 2.Re4#
- 1...Rxa8
- 2.Qxe5#
- 1...e4
- 2.Rxe4#
- 1...Sg5
- 2.Qxg5#
- 1...Sc5
- 2.Qxc5#
- 1...c6!
- threat
- 1.Rd6?
- threat
- 2.Re4#
- 1...Rxa8
- 2.Qxe5#
- 1...e4
- 2.Rxe4#
- 1...Sg5
- 2.Qxg5#
- 1...c6
- 2.Rd3#
- 1...Sc5!
- threat
- 1.Re6?
- threat
- 2.Re4#
- 1...e4
- 2.Rxe4#
- 1...Sg5
- 2.Qxg5#
- 1...Sc5
- 2.Qxc5#
- 1...c6
- 2.Rxe5#
- 1...Rxa8!
- threat
- 1.Rf6?
- threat
- 2.Re4#
- 1...Rxa8
- 2.Qxe5#
- 1...Sc5
- 2.Qxc5#
- 1...e4
- 2.Rxe4#
- 1...c6
- 2.Rf3#
- 1...Sg5!
- threat
- 1.Qh4?
- threat
- 2.Re4#
- 2.Qg3#
- 2.Qxh3#
- 2.Qe4#
- 1...e1Q
- 2.Re4#
- 2.Qe4#
- 1...e1S
- 2.Re4#
- 2.Qe4#
- 1...e1B
- 2.Re4#
- 2.Qe4#
- 1...e1R
- 2.Re4#
- 2.Qe4#
- 1...f1Q
- 2.Re4#
- 2.Qe4#
- 1...f1S
- 2.Re4#
- 2.Qe4#
- 1...f1R
- 2.Re4#
- 2.Qe4#
- 1...Rf8
- 2.Re4#
- 2.Qe4#
- 1...Rg8
- 2.Re4#
- 2.Qe4#
- 1...Sg1
- 2.Re4#
- 2.Qxf2#
- 2.Qg5#
- 2.Qe4#
- 1...Sf4
- 2.Qxf2#
- 2.Qg3#
- 1...Sg5
- 2.Qxf2#
- 2.Qxg5#
- 1...Sc5
- 2.Qg3#
- 2.Qxh3#
- 1...e4
- 2.Qg3#
- 1...Re6+!
- threat
- 1.Qg5+?
- 1...Sf4
- 2.Qg3#
- 1...Sxg5!
- 1...Sf4
- 1.Qd7?
- threat
- 2.Qxh3#
- 2.Qd2#
- 2.Qd3#
- 1...e1Q
- 2.Qd3#
- 1...e1S
- 2.Qd2#
- 1...e1B
- 2.Qd3#
- 1...e1R
- 2.Qd2#
- 2.Qd3#
- 1...e4
- 2.Qd2#
- 1...f1Q
- 2.Qd2#
- 2.Qd3#
- 1...f1S
- 2.Qd3#
- 1...f1R
- 2.Qd2#
- 2.Qd3#
- 1...Rd8
- 2.Qxh3#
- 1...Rf8
- 2.Qd2#
- 2.Qd3#
- 1...Rg8
- 2.Qd2#
- 2.Qd3#
- 1...Sg1
- 2.Qd2#
- 2.Qd3#
- 1...Sf4
- 2.Qd2#
- 1...Sg5
- 2.Qd2#
- 2.Qd3#
- 1...Sc5
- 2.Qxh3#
- 2.Qd2#
- 1...Re6+!
- threat
- 1.Bxb6+?
- Keys
- 1.Rg6!
- threat
- 2.Re4#
- 1...Rxa8
- 2.Qxe5#
- 1...e4
- 2.Rxe4#
- 1...Sg5
- 2.Qxg5#
- 1...Sc5
- 2.Qxc5#
- 1...c6
- 2.Rg3#
- threat
- 1.Rg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(k);N_GUARD,XB(J)::QAR2(I),XP(f)
- R(k);N_GUARD::QAR2(I),XP(f)
- S(d);N_GUARD::QAB(I)
- S(d);N_GUARD::QAB(I),XS(d)
- S(g);N_GUARD,N_SPINR(h)::QAB(I),XS(g)
- S(g);N_GUARD::QAB(I)
- P(f);::R1(E),XP(f)
- Tries
- Try
- B(H);CHECK,N_SPINR(F),XR(h)
- Refutation
- P(i);XB(H)
- Try
- R(F);N_SPINR(F),XR(h)
- Threat
- R1(E)
- Vars
- R(k);N_GUARD,XB(J)::QAR2(I),XP(f)
- P(f);::R1(E),XP(f)
- S(d);N_GUARD::QAB(I),XS(d)
- S(g);N_GUARD::QAB(I),XS(g)
- Refutation
- P(i);
- Try
- R(F);
- Threat
- R1(E)
- Vars
- R(k);N_GUARD,XB(J)::QAR2(I),XP(f)
- P(f);::R1(E),XP(f)
- S(d);N_GUARD::QAB(I),XS(d)
- P(i);N_PINR(F)::R1(F)
- Refutation
- S(g);N_SPINR(h)
- Try
- R(F);
- Threat
- R1(E)
- Vars
- P(f);::R1(E),XP(f)
- S(d);N_GUARD::QAB(I),XS(d)
- S(g);N_GUARD,N_SPINR(h)::QAB(I),XS(g)
- P(i);N_PINR(F)::R(F),XP(f)
- Refutation
- R(k);XB(J)
- Try
- R(F);
- Threat
- R1(E)
- Vars
- R(k);N_GUARD,XB(J)::QAR2(I),XP(f)
- S(g);N_GUARD,N_SPINR(h)::QAB(I),XS(g)
- P(f);::R1(E),XP(f)
- P(i);N_PINR(F)::R1(F)
- Refutation
- S(d);
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(4)
- Vars
- P(f);::QAR2(I)
- Refutation
- R(k);CHECK,N_PINR(F)
- Try
- Q(I);CHECK,N_PINP(f)
- Vars
- S(d);P_SPINS(d)::QAR2(I)
- Refutation
- S(d);XQ(I)
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(3)
- Vars
- P(a);::QAR1(I)
- P(a);::QAB1(I)
- P(f);::QAB1(I)
- P(b);::QAR1(I)
- R(k);::QAR(I),XS(d)
- S(d);::QAB1(I)
- Refutation
- R(k);CHECK,N_PINR(F)
- Try
- Actual
- R(F);
- Threat
- R1(E)
- Vars
- R(k);N_GUARD,XB(J)::QAR2(I),XP(f)
- P(f);::R1(E),XP(f)
- S(d);N_GUARD::QAB(I),XS(d)
- S(g);N_GUARD,N_SPINR(h)::QAB(I),XS(g)
- P(i);N_PINR(F)::R(F)
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).