MESON Chess Problem Database
Problem Display
PID: 133735 (nbq5/1p4P1/1p1p3Q/1R1pkN2/3N2b1/3P2Pn/4PB1K/4R3 w - - 0 1)
Schatz, Max
Die Schwalbe, 2009
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Qc1
- 2.Qe6#
- 1...Qc2
- 2.Qe6#
- 1...Qc3
- 2.Qe6#
- 1...Qc4
- 2.Qe6#
- 1...Qc5
- 2.Qe6#
- 1...Qc6
- 2.Qe6#
- 1...Qc7
- 2.Qe6#
- 1...Qd8
- 2.Qe6#
- 1...Qf8
- 2.Qe6#
- 1...Qh8
- 2.Qe6#
- 2.gxh8Q#
- 2.gxh8B#
- 1...Bxe2
- 2.Rxe2#
- 1...Bf3
- 2.exf3#
- 1...Bxf5
- 2.Sf3#
- 1...Ba7
- 2.Qxd6#
- 1...Sf4
- 2.gxf4#
- 1...Sc7
- 2.Qxd6#
- 1...Qe6
- Tries
- 1.Sf3+?
- 1...Kxf5
- 2.Rxd5#
- 2.e4#
- 1...Bxf3!
- 1...Kxf5
- 1.e4?
- threat
- 2.Rxd5#
- 1...Qe6
- 2.Qxe6#
- 1...Qc4
- 2.Qe6#
- 1...Qc5
- 2.Qe6#
- 1...Qc6
- 2.Qe6#
- 1...Sf4
- 2.gxf4#
- 1...Sc7
- 2.Qxd6#
- 1...Qg8!
- threat
- 1.g8Q?
- threat
- 2.Rxd5#
- 2.Qhg7#
- 2.Qxd5#
- 2.Qhh8#
- 2.Qgg7#
- 1...Qxf5
- 2.Rxd5#
- 2.Qxd5#
- 1...Qe6
- 2.Qgxe6#
- 2.Qhxe6#
- 1...Qd7
- 2.Rxd5#
- 2.Qxd5#
- 1...Qc4
- 2.Qhg7#
- 2.Qge6#
- 2.Qhe6#
- 2.Qhh8#
- 2.Qgg7#
- 2.Qe8#
- 2.Qgh8#
- 1...Qc5
- 2.Qhg7#
- 2.Qge6#
- 2.Qhe6#
- 2.Qhh8#
- 2.Qgg7#
- 2.Qe8#
- 2.Qgh8#
- 1...Qc6
- 2.Qhg7#
- 2.Qge6#
- 2.Qhe6#
- 2.Qhh8#
- 2.Qgg7#
- 2.Qgh8#
- 1...Qc7
- 2.Rxd5#
- 2.Qxd5#
- 2.Qge6#
- 2.Qhe6#
- 1...Qd8
- 2.Rxd5#
- 2.Qxd5#
- 2.Qge6#
- 2.Qhe6#
- 1...Qf8
- 2.Rxd5#
- 2.Qxd5#
- 2.Qge6#
- 2.Qhe6#
- 1...Bf3
- 2.Qhg7#
- 2.Qhh8#
- 2.Qgg7#
- 2.exf3#
- 1...Sf4
- 2.Qhg7#
- 2.Qhh8#
- 2.Qgg7#
- 2.gxf4#
- 1...Sc7
- 2.Qhg7#
- 2.Qxd6#
- 2.Qhh8#
- 2.Qgg7#
- 1...Qxg8!
- threat
- 1.g8B?
- threat
- 2.Rxd5#
- 2.Qg7#
- 2.Qh8#
- 1...Qxf5
- 2.Rxd5#
- 1...Qe6
- 2.Qxe6#
- 1...Qd7
- 2.Rxd5#
- 1...Qc4
- 2.Qg7#
- 2.Qe6#
- 2.Qh8#
- 1...Qc5
- 2.Qg7#
- 2.Qe6#
- 2.Qh8#
- 1...Qc6
- 2.Qg7#
- 2.Qe6#
- 2.Qh8#
- 1...Qc7
- 2.Rxd5#
- 2.Qe6#
- 1...Qd8
- 2.Rxd5#
- 2.Qe6#
- 1...Qf8
- 2.Rxd5#
- 2.Qe6#
- 1...Bf3
- 2.Qg7#
- 2.Qh8#
- 2.exf3#
- 1...Sf4
- 2.Qg7#
- 2.Qh8#
- 2.gxf4#
- 1...Sc7
- 2.Qg7#
- 2.Qxd6#
- 2.Qh8#
- 1...Qxg8!
- threat
- 1.Sf3+?
- Keys
- 1.Se3!
- threat
- 2.Rxd5#
- 1...Kxd4
- 2.Qf6#
- 1...Qe6
- 2.Sc4#
- 1...Qc4
- 2.Sxc4#
- 2.Sxg4#
- 1...Qc5
- 2.Sxg4#
- 1...Qc6
- 2.Sxg4#
- 1...Qg8
- 2.Sc4#
- 2.Sxg4#
- 1...Bf3
- 2.Sxf3#
- 1...Be6
- 2.Sf3#
- 1...Sf4
- 2.Qxf4#
- 1...Sc7
- 2.Sc4#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(j);N_GUARD::QAR1(J),XQ(j)
- Q(j);N_GUARD::QAR1(J)
- Q(j);N_GUARD,N_SPINP(c)::QAR1(J)
- B(b);OGATE,P_SPINB(b),XP(B)::R(A),XB(b)
- B(b);OGATE::R(A)+P(B),XB(b)
- B(b);N_GUARD,SBLOCK,XS(I)::S(G)
- B(i);N_GUARD::QAB1(J),XP(f)
- S(a);OGATE::P(F),XS(a)
- S(h);S_CUTB(i)::QAB1(J),XP(f)
- Tries
- Try
- S(G);CHECK
- Refutation
- B(b);XS(G)
- Try
- P(B);
- Threat
- R1(H),XP(c)
- Vars
- Q(j);N_GUARD::QAR1(J),XQ(j)
- Q(j);N_GUARD::QAR1(J)
- Q(j);N_GUARD,N_SPINP(c)::QAR1(J)
- S(a);OGATE::P(F),XS(a)
- S(h);S_CUTB(i)::QAB1(J),XP(f)
- Refutation
- Q(j);
- Try
- P(K);
- Threat
- DUALS(5)
- Refutation
- Q(j);XQ(K)
- Try
- P(K);
- Threat
- DUALS(3)
- Vars
- Q(j);XS(I)::R1(H),XP(c)
- Q(j);N_GUARD::QAR1(J),XQ(j)
- Q(j);::R1(H),XP(c)
- Refutation
- Q(j);XB(K)
- Try
- Actual
- S(I);
- Threat
- R1(H),XP(c)
- Vars
- K(d);N_SPINP(c),S_FLIGHT,XS(G)::QAB(J)
- Q(j);N_GUARD::S(I)
- Q(j);N_GUARD,N_SPINP(c)::S(I),XB(b)
- Q(j);N_GUARD::S(I),XB(b)
- B(b);N_GUARD::S(G),XB(b)
- B(b);N_GUARD::S(G)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(h);S_CUTQ(j)::S(I)
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).