MESON Chess Problem Database
Problem Display
PID: 260936 (r2k1K1R/RPpPpPP1/6p1/r2q3p/B7/7Q/3B4/8 w - - 0 1)
Hoffmann, Martin Wolfgang
Neue Zurcher Zeitung, 2016
#2
10 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qc4
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qxf7+
- 2.Kxf7#
- 1...Qxd2
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qd3
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qd4
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qc5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qf5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qg5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qd6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qxd7
- 2.Qxd7#
- 1...Rb5
- 2.Rxa8#
- 1...Rc5
- 2.Rxa8#
- 1...Rxa7
- 2.b8Q#
- 2.b8R#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8R#
- 2.dxc8Q#
- 2.dxc8R#
- 1...c5
- 2.Bxa5#
- 1...c6
- 2.bxa8Q#
- 2.bxa8R#
- 1...e5
- 2.Bg5#
- 1...Qa2
- Tries
- 1.Bb4?
- threat
- 2.Bxe7#
- 1...Qxf7+
- 2.Kxf7#
- 1...Qxd7
- 2.Qxd7#
- 1...c5
- 2.Bxa5#
- 1...c6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qc5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qg5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qd6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Rc5
- 2.Rxa8#
- 1...e5
- 2.Be7#
- 1...e6
- 2.Be7#
- 1...Qe4!
- threat
- 1.Qe6?
- threat
- 2.Qxe7#
- 1...Qxe6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qxd7
- 2.Qxd7#
- 1...c5
- 2.Bxa5#
- 2.Qb6#
- 1...c6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qc5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qg5
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qd6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe4!
- threat
- 1.g8Q?
- threat
- 2.Kg7#
- 1...Qxf7+
- 2.Kxf7#
- 1...Qxd7
- 2.Qxd7#
- 1...c5
- 2.Bxa5#
- 1...c6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qd4
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe5
- 2.bxa8Q#
- 2.bxa8R#
- 1...e5
- 2.Bg5#
- 1...e6!
- threat
- 1.g8R?
- threat
- 2.Kg7#
- 1...Qxf7+
- 2.Kxf7#
- 1...Qxd7
- 2.Qxd7#
- 1...c5
- 2.Bxa5#
- 1...c6
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qd4
- 2.bxa8Q#
- 2.bxa8R#
- 1...Qe5
- 2.bxa8Q#
- 2.bxa8R#
- 1...e5
- 2.Bg5#
- 1...e6!
- threat
- 1.Bb4?
- Keys
- 1.Kg8!
- threat
- 2.Kh7#
- 1...Qxf7+
- 2.Kxf7#
- 1...Qxd7
- 2.Qxd7#
- 1...c5
- 2.Bxa5#
- 1...c6
- 2.bxa8Q#
- 2.bxa8R#
- 1...e5
- 2.Bg5#
- 1...e6
- 2.f8Q#
- threat
- 1.Kg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(b);N_GUARD::PXR(g)=Q
- Q(b);CHECK,XP(G)::R(J)+K(I),XQ(b)
- Q(b);N_GUARD,XB(A)::PXR(g)=Q
- Q(b);N_GUARD,P_PINP(G)::PXR(g)=Q
- Q(b);OGATE,XP(F)::QAR1(B),XQ(b)
- R(a);N_GUARD::R(D),XR(g)
- R(g);N_GUARD,XR(D)::P=Q
- P(e);OGATEB::B(A),XR(a)
- P(e);S_CUTQ(b)::PXR(g)=Q
- P(f);OGATEB::B(A)
- Tries
- Try
- B(A);
- Threat
- B(A),XP(f)
- Vars
- Q(b);CHECK,XP(G)::R(J)+K(I),XQ(b)
- Q(b);OGATE,XP(F)::QAR1(B),XQ(b)
- P(e);OGATEB::B(A),XR(a)
- P(e);S_CUTQ(b)::PXR(g)=Q
- Q(b);N_GUARD::PXR(g)=Q
- R(a);N_GUARD::R(D),XR(g)
- P(f);::B(A)
- Refutation
- Q(b);
- Try
- Q(B);
- Threat
- QAB1(B),XP(f)
- Vars
- Q(b);N_GUARD,XQ(B)::PXR(g)=Q
- Q(b);OGATE,XP(F)::QAR1(B),XQ(b)
- P(e);S_CUTQ(b)::PXR(g)=Q
- Q(b);N_GUARD::PXR(g)=Q
- Refutation
- Q(b);
- Try
- P(H);
- Threat
- QAR(H)+K(I)
- Vars
- Q(b);CHECK,XP(G)::QAR(H)+K(I),XQ(b)
- Q(b);OGATE,XP(F)::QAR1(B),XQ(b)
- P(e);OGATEB::B(A),XR(a)
- P(e);S_CUTQ(b)::PXR(g)=Q
- Q(b);N_GUARD::PXR(g)=Q
- P(f);OGATEB::B(A)
- Refutation
- P(f);
- Try
- P(H);
- Threat
- R(H)+K(I)
- Vars
- Q(b);CHECK,XP(G)::R(H)+K(I),XQ(b)
- Q(b);OGATE,XP(F)::QAR1(B),XQ(b)
- P(e);OGATEB::B(A),XR(a)
- P(e);S_CUTQ(b)::PXR(g)=Q
- Q(b);N_GUARD::PXR(g)=Q
- P(f);OGATEB::B(A)
- Refutation
- P(f);
- Try
- Actual
- K(I);P-FLIGHT,P_SPINP(G)
- Threat
- R(J)+K(I)
- Vars
- Q(b);CHECK,XP(G)::R(J)+K(I),XQ(b)
- Q(b);N_PINP(G),OGATE,XP(F)::QAR1(B),XQ(b)
- P(e);OGATEB::B(A),XR(a)
- P(e);S_CUTQ(b)::PXR(g)=Q
- P(f);OGATEB::B(A)
- P(f);N_PINP(G)::P=Q
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).