MESON Chess Problem Database
Problem Display
PID: 91977 (1n3K2/n1NpR2B/R1p1pp2/4N3/1B1kPP2/5b2/2PP2Qp/1qr1b3 w - - 0 1)
Mira-Kraft, Edwin
Deutsche Schachblatter, 1986
#2
12 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.c3#
- 1...Bxd2
- 2.Qxd2#
- 1...Bf2
- 2.Qxf2#
- 1...Bxe4
- 2.Qxe4#
- 1...Sxa6
- 2.Rxd7#
- 1...c5
- 2.Bc3#
- 2.Rd6#
- 1...d5
- 2.Sxe6#
- 1...d6
- 2.Sxe6#
- 1...Rd1
- Tries
- 1.Sb5+?
- 1...cxb5
- 2.Rd6#
- 1...Sxb5!
- 1...cxb5
- 1.Qxf3?
- threat
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 1...Qxc2
- 2.Qe3#
- 1...Qxb4
- 2.Qe3#
- 1...Rxc2
- 2.Qd3#
- 2.Qe3#
- 1...Bxd2
- 2.Qd3#
- 1...fxe5
- 2.Qc3#
- 2.Qd3#
- 1...Qa1
- 2.Qd3#
- 2.Qe3#
- 1...Qb2
- 2.Qd3#
- 2.Qe3#
- 1...Bf2
- 2.Qxf2#
- 2.Qc3#
- 2.Qd3#
- 1...Sb5
- 2.Qd3#
- 2.Qe3#
- 1...f5
- 2.Qd3#
- 2.Qe3#
- 1...Qb3!
- threat
- 1.Sb5+?
- Keys
- 1.Rxc6!
- threat
- 2.Sxf3#
- 2.Bc3#
- 2.Bc5#
- 2.Rc4#
- 2.Rd6#
- 1...Qxc2
- 2.Rd6#
- 1...Qxb4
- 2.Sxf3#
- 1...Rxc2
- 2.Rd6#
- 1...Bxd2
- 2.Qxd2#
- 1...Bxg2
- 2.Bc3#
- 2.Bc5#
- 2.Rc4#
- 2.Rd6#
- 1...Bxe4
- 2.Bc3#
- 2.Bc5#
- 2.Rc4#
- 2.Qxe4#
- 1...Saxc6
- 2.Sb5#
- 1...Sbxc6
- 2.Rxd7#
- 1...fxe5
- 2.Bc3#
- 1...dxc6
- 2.Sxe6#
- 1...f5
- 2.Rc4#
- 1...Qa2
- 2.Sxf3#
- 2.Bc3#
- 2.Bc5#
- 1...Qa1
- 2.Sxf3#
- 2.Bc5#
- 2.Rc4#
- 2.Rd6#
- 1...Qb2
- 2.Sxf3#
- 2.Bc5#
- 2.Rc4#
- 2.Rd6#
- 1...Qb3
- 2.Bc5#
- 1...Bd1
- 2.Bc3#
- 2.Bc5#
- 2.Rc4#
- 2.Rd6#
- 1...Be2
- 2.Bc3#
- 2.Bc5#
- 2.Rd6#
- 1...Bg4
- 2.Bc3#
- 2.Bc5#
- 2.Rc4#
- 2.Rd6#
- 1...Bh5
- 2.Bc3#
- 2.Bc5#
- 2.Rc4#
- 2.Rd6#
- 1...Sb5
- 2.Sxf3#
- 2.Sxb5#
- 2.Bc5#
- 2.Rc4#
- 1...Sc8
- 2.Sxf3#
- 2.Sb5#
- 2.Bc3#
- 2.Bc5#
- 2.Rc4#
- 1...Sa6
- 2.Sxf3#
- 2.Bc3#
- 2.Rc4#
- 2.Rd6#
- 2.Rxd7#
- 1...d5
- 2.Sxf3#
- 2.Sxe6#
- 2.Bc3#
- 2.Bc5#
- 1...d6
- 2.Sxf3#
- 2.Sxe6#
- 2.Bc3#
- 2.Rc4#
- 2.Rxd6#
- threat
- 1.Rxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 6
- Sets
- R(b);N_GUARD::P(A)
- B(c);OGATE,XP(B)::QAR2(C),XB(c)
- B(c);N_GUARD::QAB(C),XB(c)
- B(e);OGATE,XP(E)::QAR1(C),XB(e)
- S(l);N_GUARD,XR(H)::R(J),XP(k)
- P(k);N_GUARD::S(I),XP(h)
- Tries
- Try
- S(I);CHECK
- Vars
- P(g);OGATE,XS(I)::R(H)
- Refutation
- S(j);XS(I)
- Try
- Q(C);XB(e)
- Threat
- DUALS(3)
- Vars
- Q(a);XP(A)::QAB1(C)
- Q(a);P_PINR(J),XB(D)::QAB1(C)
- B(c);XP(B)::QAR1(C)
- Refutation
- Q(a);
- Try
- Actual
- R(H);XP(g)
- Threat
- DUALS(5)
- Vars
- Q(a);XP(A)::R(H)
- Q(a);P_PINR(J),XB(D)::S(G),XB(e)
- R(b);XP(A)::R(H)
- B(c);OGATE,XP(B)::QAR2(C),XB(c)
- S(j);N_GUARD,XR(H)::S(I)
- S(l);N_GUARD,XR(H)::R(J),XP(k)
- P(i);XS(G)::B(D)
- P(k);N_GUARD,XR(H)::S(I),XP(h)
- P(i);::R1(H)
- Q(a);::B(D)
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).