MESON Chess Problem Database
Problem Display
PID: 203537 (4K1N1/2b5/1p1PR3/1P1k1B1R/8/2rqPP2/1nN5/5Q2 w - - 0 1)
Lobel, Emil
1st Comm., Essener Arbeiter Schachzeitung, 1924
#2
11 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kc5
- 2.Bxd3#
- 1...Qc4
- 2.Bh3#
- 2.Bg4#
- 1...Qd1
- 2.Bh3#
- 2.Bg4#
- 1...Qd2
- 2.Bh3#
- 2.Bg4#
- 1...Kc5
- Tries
- 1.Sf6+?
- 1...Kc5
- 2.Bxd3#
- 1...Kc4!
- 1...Kc5
- 1.Se7+?
- 1...Kc5
- 2.Bxd3#
- 1...Kc4!
- 1...Kc5
- 1.Rg6?
- threat
- 2.Bxd3#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxb5+
- 2.Bd7#
- 1...Qxe3+
- 2.Be4#
- 1...Kc4
- 2.Be6#
- 1...Kc5
- 2.Bxd3#
- 1...Ke5
- 2.Bxd3#
- 2.Be4#
- 1...Qxf1
- 2.Bd3#
- 1...Qxc2
- 2.Bxc2#
- 2.Bd3#
- 2.Be4#
- 1...Qxf5
- 2.Rxf5#
- 1...Bxd6
- 2.Be6#
- 1...Qe2
- 2.Bd3#
- 1...Qc4
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Bc8#
- 1...Qd1
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Bc8#
- 1...Qd2
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Bc8#
- 1...Qd4
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Bd8!
- threat
- 1.Reh6?
- threat
- 2.Bxd3#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxb5+
- 2.Bd7#
- 1...Qxe3+
- 2.Be4#
- 1...Kc4
- 2.Be6#
- 1...Kc5
- 2.Bxd3#
- 1...Ke5
- 2.Bxd3#
- 2.Be4#
- 1...Qxf1
- 2.Bd3#
- 1...Qxc2
- 2.Bxc2#
- 2.Bd3#
- 2.Be4#
- 1...Qxf5
- 2.Rxf5#
- 1...Bxd6
- 2.Be6#
- 1...Qe2
- 2.Bd3#
- 1...Qc4
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qd1
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qd2
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qd4
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Bd8!
- threat
- 1.Sf6+?
- Keys
- 1.Rf6!
- threat
- 2.Bxd3#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxb5+
- 2.Bd7#
- 1...Qxe3+
- 2.Be4#
- 1...Kc4
- 2.Be6#
- 1...Kc5
- 2.Bxd3#
- 1...Ke5
- 2.Bxd3#
- 2.Be4#
- 1...Qxf1
- 2.Bd3#
- 1...Qxc2
- 2.Bxc2#
- 2.Bd3#
- 2.Be4#
- 1...Qxf5
- 2.Rhxf5#
- 1...Bxd6
- 2.Be6#
- 1...Qe2
- 2.Bd3#
- 1...Qc4
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bg6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qd1
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bg6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qd2
- 2.Bd3#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bg6#
- 2.Bd7#
- 2.Bh7#
- 2.Bc8#
- 1...Qd4
- 2.Be4#
- 1...Sc4
- 2.Be4#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- K(d);P-FLIGHT::R(G)+B(F),XQ(c)
- Tries
- Try
- S(K);CHECK
- Vars
- K(d);P-FLIGHT::R(G)+B(F),XQ(c)
- Refutation
- K(d);P_SPINQ(c),S_FLIGHT
- Try
- S(K);CHECK
- Vars
- K(d);P-FLIGHT::R(G)+B(F),XQ(c)
- Refutation
- K(d);P_SPINQ(c),S_FLIGHT
- Try
- R(I);
- Threat
- R(G)+B(F),XQ(c)
- Vars
- Q(c);CHECK::R(G)+B(F),DCHECK,XQ(c)
- Q(c);CHECK,N_GUARD,XP(E)::R(G)+B(F)
- Q(c);CHECK,XP(C)::R(G)+B(F),DCHECK
- K(d);P_SPINQ(c),S_FLIGHT::B(F)
- K(d);P-FLIGHT::R(G)+B(F),XQ(c)
- Q(c);XQ(A)::R(G)+B(F)
- Q(c);OGATE,P_SPINQ(c),XB(F)::R(G),XQ(c)
- B(f);SBLOCK,XP(H)::R(G)+B(F),DCHECK
- Q(c);P_PINP(C)::R(G)+B(F)
- Q(c);::R(G)+B(F),DCHECK
- S(a);SBLOCK::R(G)+B(F),DCHECK
- Refutation
- B(f);
- Try
- R(I);
- Threat
- R(G)+B(F),XQ(c)
- Vars
- Q(c);CHECK::R(G)+B(F),DCHECK,XQ(c)
- Q(c);CHECK,N_GUARD,XP(E)::R(G)+B(F)
- Q(c);CHECK,XP(C)::R(G)+B(F),DCHECK
- K(d);P_SPINQ(c),S_FLIGHT::B(F)
- K(d);P-FLIGHT::R(G)+B(F),XQ(c)
- Q(c);XQ(A)::R(G)+B(F)
- Q(c);OGATE,P_SPINQ(c),XB(F)::R(G),XQ(c)
- B(f);SBLOCK,XP(H)::R(G)+B(F),DCHECK
- Q(c);P_PINP(C)::R(G)+B(F)
- Q(c);::R(G)+B(F),DCHECK
- S(a);SBLOCK::R(G)+B(F),DCHECK
- Refutation
- B(f);
- Try
- Actual
- R(I);
- Threat
- R(G)+B(F),XQ(c)
- Vars
- Q(c);CHECK::R(G)+B(F),DCHECK,XQ(c)
- Q(c);CHECK,N_GUARD,XP(E)::R(G)+B(F)
- Q(c);CHECK,XP(C)::R(G)+B(F),DCHECK
- K(d);P_SPINQ(c),S_FLIGHT::B(F)
- K(d);P-FLIGHT::R(G)+B(F),XQ(c)
- Q(c);XQ(A)::R(G)+B(F)
- Q(c);OGATE,P_SPINQ(c),XB(F)::R(G),XQ(c)
- B(f);SBLOCK,XP(H)::R(G)+B(F),DCHECK
- Q(c);P_PINP(C)::R(G)+B(F)
- Q(c);::R(G)+B(F),DCHECK
- S(a);SBLOCK::R(G)+B(F),DCHECK
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).