MESON Chess Problem Database
Problem Display
PID: 237007 (7b/5Q2/1K1BP1pq/3p4/4k1B1/2P1p2N/2P1p3/1NnRR2b w - - 0 1)
Hannelius, Jan Ingvar
Szachy, 1976
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Qxf4#
- 1...Qg5
- 2.Sxg5#
- 1...Qg7
- 2.Sg5#
- 2.Qf4#
- 1...Qf8
- 2.Sg5#
- 1...Qxh3
- 2.Qxg6#
- 2.Qf4#
- 1...Qh4
- 2.Qxg6#
- 2.Qf4#
- 1...Qh5
- 2.Qf4#
- 1...Qh7
- 2.Sg5#
- 2.Qf4#
- 1...Bf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Bxc3
- 2.Sxc3#
- 1...Bd4+
- 2.Rxd4#
- 1...Sd3
- 2.cxd3#
- 1...exd1Q
- 2.Sf2#
- 1...exd1S
- 2.Sd2#
- 1...exd1B
- 2.Sd2#
- 2.Sf2#
- 1...exd1R
- 2.Sf2#
- 1...d4
- 2.Qb7#
- 1...g5
- 2.Qf5#
- 1...Qf4
- Tries
- 1.Rxe2?
- threat
- 2.Sd2#
- 2.Sf2#
- 1...Bd4+
- 2.Rxd4#
- 1...Qxh3
- 2.Sd2#
- 2.Qxg6#
- 2.Qf4#
- 1...Bxc3
- 2.Sxc3#
- 2.Sf2#
- 1...d4
- 2.Qb7#
- 1...Qf4
- 2.Sd2#
- 2.Qxf4#
- 1...Qh4
- 2.Sd2#
- 2.Qxg6#
- 2.Qf4#
- 1...Sb3
- 2.Sf2#
- 1...Sd3
- 2.Sd2#
- 2.cxd3#
- 1...Sxe2!
- threat
- 1.Qb7?
- threat
- 2.Qxd5#
- 1...Bd4+
- 2.Rxd4#
- 1...exd1Q
- 2.Sf2#
- 1...exd1S
- 2.Sd2#
- 1...exd1B
- 2.Sd2#
- 2.Sf2#
- 1...exd1R
- 2.Sf2#
- 1...Qg5
- 2.Sxg5#
- 1...Sd3
- 2.cxd3#
- 1...Qh5!
- threat
- 1.e7?
- threat
- 2.Qxd5#
- 1...Bd4+
- 2.Rxd4#
- 1...exd1Q
- 2.Sf2#
- 1...exd1S
- 2.Sd2#
- 1...exd1B
- 2.Sd2#
- 2.Sf2#
- 1...exd1R
- 2.Sf2#
- 1...Qg5
- 2.Sxg5#
- 1...Qh5
- 2.Qf4#
- 1...Sd3
- 2.cxd3#
- 1...d4!
- threat
- 1.Rxe2?
- Keys
- 1.Qf1!
- threat
- 2.Qxh1#
- 1...Bd4+
- 2.Rxd4#
- 1...Qxh3
- 2.Qf4#
- 1...exd1Q
- 2.Sf2#
- 1...exd1B
- 2.Sd2#
- 2.Sf2#
- 1...exf1Q
- 2.Sd2#
- 1...exf1S
- 2.Sf2#
- 1...exf1B
- 2.Sd2#
- 2.Sf2#
- 1...exf1R
- 2.Sd2#
- 1...Bg2
- 2.Qxg2#
- 1...Qf4
- 2.Qxf4#
- 1...Qf8
- 2.Sg5#
- 1...Bf3
- 2.Qxf3#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 8
- Sets
- Q(h);N_GUARD::QAR1(K),XQ(h)
- Q(h);N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::S(F)
- Q(h);N_GUARD::QAR1(K)
- B(i);XP(E)::S(A),XB(i)
- B(i);CHECK,N_GUARD::R1(B),XB(i)
- S(a);OGATE::P(D),XS(a)
- P(c);P_SPINP(d),XR(B)::S(F)
- P(c);P_SPINP(d),XR(B)::S(A)
- P(f);OGATEB::QAB(K)
- P(g);N_GUARD::QAB1(K)
- Tries
- Try
- R(C);P_PINP(d),XP(c)
- Threat
- DUALS(2)
- Vars
- B(i);CHECK,N_GUARD::R1(B),XB(i)
- P(f);OGATEB::QAB(K)
- S(a);::S(F)
- Refutation
- S(a);N_SPINP(d),XR(C)
- Try
- Q(K);P_PINP(f)
- Threat
- QAB1(K),XP(f)
- Vars
- B(i);CHECK,N_GUARD::R1(B),XB(i)
- P(c);N_SPINP(f),P_SPINP(d),XR(B)::S(F)
- P(c);N_SPINP(f),P_SPINP(d),XR(B)::S(A)
- Q(h);N_GUARD::S(F),XQ(h)
- S(a);OGATE::P(D),XS(a)
- Refutation
- Q(h);
- Try
- P(J);
- Threat
- QAB1(K),XP(f)
- Vars
- B(i);CHECK,N_GUARD::R1(B),XB(i)
- P(c);P_SPINP(d),XR(B)::S(F)
- P(c);P_SPINP(d),XR(B)::S(A)
- Q(h);N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::QAR1(K)
- S(a);OGATE::P(D),XS(a)
- Refutation
- P(f);
- Try
- Actual
- Q(K);
- Threat
- QAB(K),XB(b)
- Vars
- B(i);CHECK,N_GUARD::R1(B),XB(i)
- Q(h);N_GUARD,XS(F)::QAR1(K)
- P(c);P_SPINP(d),XR(B)::S(F)
- P(c);P_SPINP(d),XQ(K)::S(A)
- P(c);P_SPINP(d),XQ(K)::S(F)
- B(b);N_GUARD::QAB(K),XB(b)
- Q(h);N_GUARD::QAR1(K),XQ(h)
- Q(h);N_GUARD::S(F)
- B(b);N_GUARD::QAB1(K),XB(b)
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).