MESON Chess Problem Database
Problem Display
PID: 233912 (8/8/2ppp3/R1q5/1P1kB3/N1N3Q1/b6R/1n4K1 w - - 0 1)
Hannemann, Knud Harald
Skakbladet, 1952
#2
8 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.Qd3#
- 1...Qb6
- 2.Qd3#
- 1...Qa7
- 2.Qd3#
- 1...Qc4
- 2.Sc2#
- 1...Qe5
- 2.Qd3#
- 1...Qf5
- 2.Qd3#
- 1...Qh5
- 2.Qd3#
- 1...Bc4
- 2.Sc2#
- 1...Sd2
- 2.Rxd2#
- 1...e5
- 2.Qd3#
- 1...Qxb4
- Tries
- 1.Bxb1?
- threat
- 2.Rd2#
- 2.Rh4#
- 1...Qxc3
- 2.Rh4#
- 2.Qf4#
- 1...Qc4
- 2.Sc2#
- 2.Rh4#
- 1...Qb5
- 2.Rh4#
- 1...Qd5
- 2.Se2#
- 2.Rd2#
- 1...Qe5
- 2.Rd2#
- 2.Qd3#
- 1...Qf5
- 2.Se2#
- 1...Qg5
- 2.Se2#
- 1...Qh5
- 2.Rd2#
- 2.Qd3#
- 1...Bc4
- 2.Sc2#
- 2.Rh4#
- 1...Bd5
- 2.Se2#
- 2.Rd2#
- 1...e5
- 2.Rd2#
- 2.Qd3#
- 1...Bxb1!
- threat
- 1.Bg6?
- threat
- 2.Rh4#
- 1...Sxc3
- 2.Rd2#
- 1...Qe5
- 2.Qd3#
- 1...Qd5
- 2.Se2#
- 1...Qg5
- 2.Se2#
- 1...Qh5
- 2.Qd3#
- 1...Bd5
- 2.Se2#
- 1...Sd2
- 2.Rxd2#
- 1...e5
- 2.Qd3#
- 1...Qf5!
- threat
- 1.Bh7?
- threat
- 2.Rh4#
- 1...Sxc3
- 2.Rd2#
- 1...Qe5
- 2.Qd3#
- 1...Qd5
- 2.Se2#
- 1...Qg5
- 2.Se2#
- 1...Qh5
- 2.Qd3#
- 1...Bd5
- 2.Se2#
- 1...Sd2
- 2.Rxd2#
- 1...e5
- 2.Qd3#
- 1...Qf5!
- threat
- 1.Rh4?
- threat
- 2.Se2#
- 2.Bxb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Qxc3
- 2.Bxb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Sxa3
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Qe5
- 2.Se2#
- 2.Qd3#
- 1...Qc4
- 2.Sc2#
- 2.Bxb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Qb5
- 2.Bxb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Qd5
- 2.Se2#
- 2.Bxd5#
- 1...Qf5
- 2.Se2#
- 2.Bxf5#
- 2.Qd3#
- 1...Qg5
- 2.Se2#
- 1...Qh5
- 2.Qd3#
- 1...Bc4
- 2.Sc2#
- 2.Bxb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Bd5
- 2.Se2#
- 2.Bxd5#
- 1...Sd2
- 2.Se2#
- 1...d5
- 2.Se2#
- 2.Bxb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bxd5#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...e5
- 2.Se2#
- 2.Qd3#
- 1...Sxc3!
- threat
- 1.Rxc5?
- threat
- 2.Sc2#
- 2.Qf2#
- 2.Qd3#
- 1...Sxa3
- 2.Rd2#
- 2.Qf2#
- 2.Qd3#
- 1...Sxc3
- 2.Qd3#
- 1...Bb3
- 2.Qf2#
- 2.Qd3#
- 1...Bc4
- 2.Sc2#
- 2.Rxc4#
- 1...Bd5
- 2.Sc2#
- 1...d5
- 2.Sc2#
- 1...dxc5!
- threat
- 1.Qf2+?
- 1...Ke5
- 2.Rh5#
- 1...Kxc3!
- 1...Ke5
- 1.Bxb1?
- Keys
- 1.Bc2!
- threat
- 2.Rh4#
- 1...Sxc3
- 2.Rd2#
- 1...Qd5
- 2.Se2#
- 1...Qe5
- 2.Qd3#
- 1...Qf5
- 2.Se2#
- 1...Qg5
- 2.Se2#
- 1...Qh5
- 2.Qd3#
- 1...Bd5
- 2.Se2#
- 1...Sd2
- 2.Rxd2#
- 1...e5
- 2.Qd3#
- threat
- 1.Bc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(d);XP(F)::QAR1(E)
- Q(d);::QAR1(E)
- Q(d);SBLOCK::S(C)
- B(b);SBLOCK::S(C)
- S(a);N_GUARD::R(B),XS(a)
- P(g);SBLOCK::QAR1(E)
- Tries
- Try
- B(G);XS(a)
- Threat
- DUALS(2)
- Vars
- Q(d);::R(B)
- Q(d);::S(D)
- Q(d);P_PINQ(E)::S(D)
- Refutation
- B(b);XB(G)
- Try
- B(G);
- Threat
- R(B)
- Vars
- S(a);N_GUARD,XS(D)::R(B)
- Q(d);::QAR1(E)
- Q(d);::S(D)
- Q(d);P_PINQ(E)::S(D)
- B(b);SBLOCK::S(D)
- S(a);N_GUARD::R(B),XS(a)
- P(g);SBLOCK::QAR1(E)
- Refutation
- Q(d);
- Try
- B(G);
- Threat
- R(B)
- Vars
- S(a);N_GUARD,XS(D)::R(B)
- Q(d);::QAR1(E)
- Q(d);::S(D)
- Q(d);P_PINQ(E)::S(D)
- B(b);SBLOCK::S(D)
- S(a);N_GUARD::R(B),XS(a)
- P(g);SBLOCK::QAR1(E)
- Refutation
- Q(d);
- Try
- R(B);
- Threat
- DUALS(10)
- Vars
- Q(d);P_PINQ(E)::S(D)
- Q(d);::QAR1(E)
- S(a);::S(D)
- Refutation
- S(a);XS(D)
- Try
- R(H);XQ(d)
- Threat
- DUALS(3)
- Vars
- S(a);XS(D)::QAR1(E)
- B(b);::S(C)
- P(f);::S(C)
- Refutation
- P(f);XR(H)
- Try
- Q(E);CHECK
- Vars
- K(c);P_PINQ(E),P_SPINQ(d),S_FLIGHT::R(B)
- Refutation
- K(c);P_PINQ(E),S_FLIGHT,XS(D)
- Try
- Actual
- B(G);
- Threat
- R(B)
- Vars
- S(a);N_GUARD,XS(D)::R(B)
- Q(d);::S(D)
- Q(d);::QAR1(E)
- Q(d);P_PINQ(E)::S(D)
- B(b);SBLOCK::S(D)
- S(a);N_GUARD::R(B),XS(a)
- P(g);SBLOCK::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).