MESON Chess Problem Database
Problem Display
PID: 179884 (5r2/P2N1pp1/1b2B1p1/2p4b/1Pn1k3/2B5/2P1nQP1/K2N1R2 w - - 0 1)
Gross, Erwin
Die Schwalbe, 1963
#2
11 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bf3
- 2.Qxf3#
- 1...Ba5
- 2.Sxc5#
- 1...Bc7
- 2.Sxc5#
- 1...Bd8
- 2.Sxc5#
- 2.a8Q#
- 2.a8B#
- 1...Sc1
- 2.Qf4#
- 1...Sg1
- 2.Qf4#
- 1...Sxc3
- 2.Sxc3#
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sb2
- 2.Qe3#
- 1...Sd2
- 2.Qe3#
- 1...Sa3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sa5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...Sd6
- 2.Qe3#
- 1...g5
- 2.Qf5#
- 1...Bf3
- Tries
- 1.Sxf8?
- threat
- 2.a8Q#
- 2.a8B#
- 1...Sxc3
- 2.Qf4#
- 1...cxb4
- 2.a8Q#
- 2.a8B#
- 1...fxe6
- 2.a8Q#
- 2.a8B#
- 1...Bf3
- 2.Qxf3#
- 1...Sd4
- 2.Qf4#
- 1...Bg4
- 2.a8Q#
- 2.a8B#
- 1...Ba5
- 2.a8Q#
- 2.a8B#
- 1...Bc7
- 2.a8Q#
- 2.a8B#
- 1...Bd8
- 2.a8Q#
- 2.a8B#
- 1...Sc1
- 2.Qf4#
- 2.a8Q#
- 2.a8B#
- 1...Sg1
- 2.Qf4#
- 2.a8Q#
- 2.a8B#
- 1...Sg3
- 2.Qf4#
- 2.a8Q#
- 2.a8B#
- 1...Sf4
- 2.Qxf4#
- 1...Sb2
- 2.Qe3#
- 2.a8Q#
- 2.a8B#
- 1...Sd2
- 2.Qe3#
- 2.a8Q#
- 2.a8B#
- 1...Sa3
- 2.Qe3#
- 2.a8Q#
- 2.a8B#
- 1...Se3
- 2.Qxe3#
- 1...Sa5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...Sd6
- 2.Qe3#
- 1...g5
- 2.Qf5#
- 2.a8Q#
- 2.a8B#
- 1...f5
- 2.a8Q#
- 2.a8B#
- 1...f6
- 2.a8Q#
- 2.a8B#
- 1...Bxa7!
- threat
- 1.Bxc4?
- threat
- 2.Qe3#
- 1...Bf3
- 2.Qxf3#
- 1...Sf4
- 2.Qxf4#
- 1...cxb4!
- threat
- 1.Bf5+?
- 1...gxf5
- 2.Qxf5#
- 1...Kd5!
- 1...gxf5
- 1.Qg3?
- threat
- 2.Sf2#
- 2.Qd3#
- 1...Sxc3
- 2.Rf4#
- 2.Qf4#
- 2.Qd3#
- 1...cxb4
- 2.Qd3#
- 1...fxe6
- 2.Qd3#
- 1...Bf3
- 2.Qxf3#
- 2.gxf3#
- 1...Sc1
- 2.Sf2#
- 2.Rf4#
- 2.Qf4#
- 1...Sf4
- 2.Sf2#
- 2.Rxf4#
- 2.Qxf4#
- 1...Sb2
- 2.Sf2#
- 2.Qe5#
- 2.Qe3#
- 1...Se3
- 2.Sf2#
- 2.Qe5#
- 2.Qxe3#
- 1...Se5
- 2.Sf2#
- 2.Qxe5#
- 2.Qe3#
- 1...Sxg3!
- threat
- 1.Qh4+?
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Bg4!
- 1...Sf4
- 1.Qxc5?
- threat
- 2.Bd5#
- 2.Qd5#
- 2.Qc6#
- 1...Bxc5
- 2.Sxc5#
- 1...Sxc3
- 2.Sxc3#
- 1...fxe6
- 2.Qc6#
- 1...Rc8
- 2.Bd5#
- 2.Qd5#
- 1...Sd4
- 2.Bd5#
- 2.Qd5#
- 1...Sf4
- 2.Sf2#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Bd5#
- 2.Qd5#
- 2.Qe5#
- 1...Se5
- 2.Bd5#
- 2.Qd5#
- 2.Qxe5#
- 1...Bf3!
- threat
- 1.Qxe2+?
- 1...Se3
- 2.Qd3#
- 2.Qxe3#
- 1...Bxe2!
- 1...Se3
- 1.Sxf8?
- Keys
- 1.Qxf7!
- threat
- 2.Bd5#
- 1...Rxf7
- 2.a8Q#
- 2.a8B#
- 1...Sxc3
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se3
- 2.Sf2#
- threat
- 1.Qxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- B(e);N_GUARD::QAB1(E),XB(e)
- B(f);N_GUARD::S(K),XP(d)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(b);N_GUARD::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- P(g);N_GUARD::QAB1(E)
- Tries
- Try
- S(K);XR(j)
- Threat
- P=Q
- Vars
- S(a);N_GUARD,XB(G)::QAR1(E)
- P(d);XP(H)::P=Q
- P(h);XB(I)::P=Q
- B(e);N_GUARD::QAB1(E),XB(e)
- S(a);N_GUARD::QAR1(E)
- B(e);::P=Q
- B(f);::P=Q
- S(a);N_GUARD::QAR1(E),XS(a)
- S(b);N_GUARD::QAR1(E),XS(b)
- S(b);N_GUARD::QAR1(E)
- P(h);::P=Q
- Refutation
- B(f);XP(J)
- Try
- B(I);XS(b)
- Threat
- QAR1(E)
- Vars
- B(e);N_GUARD::QAB1(E),XB(e)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- P(d);XP(H)
- Try
- B(I);CHECK
- Vars
- P(g);OGATE,XB(I)::QAB1(E),XP(g)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(d);XP(H)::QAB1(E)
- P(h);XB(I)::QAB1(E)
- Refutation
- S(a);XQ(E)
- Try
- Q(E);CHECK
- Refutation
- B(e);P_SPINB(e)
- Try
- Q(E);XP(d)
- Threat
- DUALS(3)
- Vars
- B(f);XQ(E)::S(K),XB(f)
- S(a);XB(G)::S(B),XS(a)
- P(h);XB(I)::QAB(E)
- S(a);SBLOCK::S(B)
- S(b);N_GUARD::QAR1(E)
- Refutation
- B(e);
- Try
- Q(E);CHECK,XS(a)
- Refutation
- B(e);XQ(E)
- Try
- Actual
- Q(E);XP(h)
- Threat
- B(I)
- Vars
- R(j);N_GUARD,XQ(E)::P=Q
- S(a);N_GUARD,XB(G)::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(b);SBLOCK::S(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).