MESON Chess Problem Database
Problem Display
PID: 270874 (1Q3b2/2q3P1/nr4RN/3B2B1/2P4p/R1N3kr/4Pp1p/3K1b2 w - - 0 1)
Eliassen, Harald
Schackvarlden, 1936
#2
11 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Bxf4#
- 2.Bf6#
- 2.Qxf4#
- 1...Qe5
- 2.Qxe5#
- 1...Qd6
- 2.Sb5#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Rb1+
- 2.Bc1#
- 1...Rb2
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Rb3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Rb4
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Rb5
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Rd6
- 2.Sb1#
- 2.Sa2#
- 2.Sa4#
- 2.Sb5#
- 1...Rb7
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Rxb8
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Bxe2+
- 2.Sxe2#
- 1...Bg2
- 2.Se4#
- 1...Bd6
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Qf4
- Tries
- 1.Sb1+?
- 1...Rb3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Rxb3#
- 2.Qxb3#
- 1...Bxa3!
- 1...Rb3
- 1.Sa2+?
- 1...Rb3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Rxb3#
- 2.Qxb3#
- 1...Bxa3!
- 1...Rb3
- 1.Sa4+?
- 1...Rb3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Rxb3#
- 2.Qxb3#
- 1...Bxa3!
- 1...Rb3
- 1.Qxc7+?
- 1...Rd6
- 2.Sb1#
- 2.Sa2#
- 2.Sa4#
- 2.Sb5#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Bd6
- 2.Sb5#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 1...Sxc7!
- 1...Rd6
- 1.gxf8Q?
- threat
- 2.Sb5#
- 2.Bf4#
- 2.Qf3#
- 1...Rb1+
- 2.Sxb1#
- 2.Bc1#
- 1...Bxe2+
- 2.Sxe2#
- 1...Rxg6
- 2.Sb1#
- 2.Sa2#
- 2.Sa4#
- 2.Sb5#
- 2.Qf3#
- 1...h1Q
- 2.Bf4#
- 1...h1S
- 2.Bf4#
- 1...h1B
- 2.Bf4#
- 1...h1R
- 2.Bf4#
- 1...Qf4
- 2.Sb5#
- 2.Bxf4#
- 2.Bf6#
- 2.Qbxf4#
- 2.Qfxf4#
- 1...Rb2
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 2.Qf3#
- 1...Rb3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 2.Qf3#
- 1...Rb4
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 2.Qf3#
- 1...Rb5
- 2.Sxb5#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 2.Qf3#
- 1...Re6
- 2.Bf4#
- 2.Qf3#
- 1...Bg2
- 2.Se4#
- 2.Bf4#
- 1...Sb4
- 2.Bf4#
- 2.Qf3#
- 1...Sc5
- 2.Bf4#
- 2.Qf3#
- 1...Rf6!
- threat
- 1.gxf8R?
- threat
- 2.Sb5#
- 2.Bf4#
- 1...Rb1+
- 2.Sxb1#
- 2.Bc1#
- 1...Bxe2+
- 2.Sxe2#
- 1...Rxg6
- 2.Sb1#
- 2.Sa2#
- 2.Sa4#
- 2.Sb5#
- 1...h1Q
- 2.Bf4#
- 1...h1S
- 2.Bf4#
- 1...h1B
- 2.Bf4#
- 1...h1R
- 2.Bf4#
- 1...Qf4
- 2.Sb5#
- 2.Bxf4#
- 2.Bf6#
- 2.Qxf4#
- 1...Rb2
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 1...Rb3
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 1...Rb4
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 1...Rb5
- 2.Sxb5#
- 2.Bc1#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Be7#
- 2.Bd8#
- 1...Re6
- 2.Bf4#
- 1...Bg2
- 2.Se4#
- 2.Bf4#
- 1...Sb4
- 2.Bf4#
- 1...Sc5
- 2.Bf4#
- 1...Rf6!
- threat
- 1.Sb1+?
- Keys
- 1.Bh1!
- threat
- 2.Se4#
- 1...Qd6+
- 2.Bd2#
- 1...Rb1+
- 2.Bc1#
- 1...Rd6+
- 2.Sd5#
- 1...Bxe2+
- 2.Sxe2#
- threat
- 1.Bh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(i);OGATE::QAB(K),XQ(i)
- R(h);CHECK,N_GUARD::R(H)+B(G)
- B(a);CHECK,XP(B)::R(C)+S(D),DCHECK,XB(a)
- B(a);SBLOCK::R(C)+S(D),DCHECK
- Tries
- Try
- S(D);CHECK
- Refutation
- B(j);XR(C)
- Try
- S(D);CHECK
- Refutation
- B(j);XR(C)
- Try
- S(D);CHECK
- Refutation
- B(j);XR(C)
- Try
- Q(K);CHECK,XQ(i)
- Refutation
- S(g);XQ(K)
- Try
- P(J);XB(j)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,XP(B)::R(C)+S(D),DCHECK,XB(a)
- P(c);::R(H)+B(G),DCHECK
- Refutation
- R(h);
- Try
- P(J);XB(j)
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,XP(B)::R(C)+S(D),DCHECK,XB(a)
- P(c);::R(H)+B(G),DCHECK
- R(h);::R(H)+B(G),DCHECK
- S(g);::R(H)+B(G),DCHECK
- Refutation
- R(h);
- Try
- Actual
- B(F);
- Threat
- R(C)+S(D),DCHECK
- Vars
- Q(i);CHECK,S_CUTR(h)::R(H)+B(G)
- R(h);CHECK,N_GUARD::R(H)+B(G)
- R(h);CHECK,N_GUARD,N_SPINQ(i),S_CUTB(j)::R(C)+S(D)
- B(a);CHECK,XP(B)::R(C)+S(D),DCHECK,XB(a)
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).