MESON Chess Problem Database
Problem Display
PID: 165706 (qb3B2/r1p1nPPK/1P1P3R/pB1k1P2/N4P2/4P3/2QNpn2/2rb4 w - - 0 1)
Berlin, Dieter
Die Schwalbe, 2016
#2
14 + 11
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qc4#
- 2.Qc5#
- 1...Rb1
- 2.Qc4#
- 2.Qc5#
- 1...Sh1
- 2.Qd3#
- 2.Qe4#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 2.Qe4#
- 1...Se4
- 2.Qd3#
- 2.Qxe4#
- 1...Sg4
- 2.Qd3#
- 2.Qe4#
- 1...Sxf5
- 2.Qxf5#
- 1...Sc6
- 2.Bc4#
- 1...Sg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...cxb6
- 2.Sxb6#
- 1...c5
- 2.Sc3#
- 1...c6
- 2.Bc4#
- 1...Ra1
- Tries
- 1.Qb3+?
- 1...Rc4
- 2.Qxc4#
- 1...Bxb3!
- 1...Rc4
- 1.Qa2+?
- 1...Rc4
- 2.Qxc4#
- 1...Bb3!
- 1...Rc4
- 1.Qc3?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Sxf5
- 2.Qe5#
- 1...cxd6
- 2.Qd4#
- 1...Sd3
- 2.Qd4#
- 2.Qxd3#
- 2.e4#
- 1...Sg4
- 2.Qd4#
- 2.Qd3#
- 2.e4#
- 1...Sc6
- 2.Bc4#
- 1...Sg6
- 2.Qd4#
- 1...c5
- 2.Qe5#
- 1...Rxc3!
- threat
- 1.e4+?
- 1...Sxe4
- 2.Qd3#
- 2.Qxe4#
- 1...Kd4!
- 1...Sxe4
- 1.dxe7?
- threat
- 2.Bc4#
- 1...Qc6
- 2.Bxc6#
- 1...Rxc2!
- threat
- 1.d7?
- threat
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...Rxc2
- 2.d8Q#
- 2.d8R#
- 1...Bxc2
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...Sxf5
- 2.Sc3#
- 2.Bc4#
- 2.Qxf5#
- 1...cxb6
- 2.Sxb6#
- 2.Bc4#
- 1...e1Q
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...e1S
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...e1B
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...e1R
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...Qb7
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...Ra1
- 2.Bc4#
- 2.Qc4#
- 2.Qc5#
- 2.d8Q#
- 2.d8R#
- 1...Rb1
- 2.Bc4#
- 2.Qc4#
- 2.Qc5#
- 2.d8Q#
- 2.d8R#
- 1...Ra6
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...Rb7
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 1...Sh1
- 2.Bc4#
- 2.Qd3#
- 2.Qe4#
- 2.d8Q#
- 2.d8R#
- 1...Sd3
- 2.Bc4#
- 2.Qxd3#
- 2.d8Q#
- 2.d8R#
- 1...Sh3
- 2.Bc4#
- 2.Qd3#
- 2.Qe4#
- 2.d8Q#
- 2.d8R#
- 1...Se4
- 2.Bc4#
- 2.Qd3#
- 2.Qxe4#
- 1...Sg4
- 2.Bc4#
- 2.Qd3#
- 2.Qe4#
- 2.d8Q#
- 2.d8R#
- 1...Sc6
- 2.Sc3#
- 2.Bc4#
- 1...Sg6
- 2.Sc3#
- 2.d8Q#
- 2.d8R#
- 1...Sc8
- 2.Sc3#
- 2.Bc4#
- 1...Sg8
- 2.Sc3#
- 2.Bc4#
- 2.d8Q#
- 2.d8R#
- 2.fxg8Q#
- 2.fxg8B#
- 1...c5
- 2.Sc3#
- 2.Bc4#
- 1...c6
- 2.Bc4#
- 1...Qc6!
- threat
- 1.Qb3+?
- Keys
- 1.g8S!
- threat
- 2.Sxe7#
- 1...Sxf5
- 2.Qxf5#
- 1...Sxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...cxb6
- 2.Sxb6#
- 1...cxd6
- 2.Sf6#
- 1...Sc6
- 2.Sf6#
- 2.Bc4#
- 1...Sg6
- 2.Sf6#
- 1...Sc8
- 2.Sf6#
- 1...c5
- 2.Sc3#
- 1...c6
- 2.Bc4#
- threat
- 1.g8S!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- S(d);N_GUARD::QAR2(A),XS(d)
- S(i);OGATE,XP(G)::QAR2(A),XS(i)
- S(i);SBLOCK::B(F)
- S(i);OGATE::PXS(i)=Q
- P(h);XP(H)::S(D),XP(h)
- P(h);SBLOCK::S(D)
- P(h);SBLOCK::B(F)
- Tries
- Try
- Q(A);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- B(b);P_SPINB(b)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(i);XP(G)::QAR1(A)
- P(h);XP(I)::QAR1(A)
- S(i);SBLOCK::B(F)
- S(i);::QAR1(A)
- P(h);::QAR1(A)
- Refutation
- R(a);XQ(A)
- Try
- P(C);CHECK
- Refutation
- K(f);P-FLIGHT
- Try
- P(I);XS(i)
- Threat
- B(F)
- Vars
- Q(j);N_GUARD::B(F),XQ(j)
- Refutation
- R(a);XQ(A)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- R(a);XQ(A)::P=Q
- P(h);::B(F)
- Refutation
- Q(j);
- Try
- Actual
- P(L);
- Threat
- S(L),XS(i)
- Vars
- S(i);OGATE,XP(G)::QAR2(A),XS(i)
- S(i);OGATE,XS(L)::PXS(i)=Q
- P(h);XP(H)::S(D),XP(h)
- P(h);SBLOCK,XP(I)::S(L)
- S(i);::S(L)
- P(h);SBLOCK::S(D)
- P(h);SBLOCK::B(F)
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).