MESON Chess Problem Database
Problem Display
PID: 243768 (8/2N4N/1PP1p1R1/p1n1k2P/p3n2R/B3K3/1PB5/4Q3 w - - 0 1)
Berg, Wolfgang
Schach, 2008
#2
12 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kf5
- 2.Rg5#
- 1...Kd6
- 2.Rxe6#
- 1...Sd2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sg5
- 2.Qg3#
- 1...Sd6
- 2.Qc3#
- 2.Qg3#
- 1...Sf6
- 2.Qg3#
- 1...Kf5
- Tries
- 1.Bxe4?
- threat
- 2.Qg3#
- 1...Kd6
- 2.Rxe6#
- 1...Sd3
- 2.Rg5#
- 2.Rxe6#
- 2.Qc3#
- 1...Sxe4!
- threat
- 1.Bxc5?
- 1...Kf5
- 2.Rg5#
- 1...Sxc5
- 2.Qg3#
- 1...Sf2
- 2.Kxf2#
- 2.Rg5#
- 2.Rxe6#
- 2.Qc3#
- 1...Sd2
- 2.Kxd2#
- 2.Rg5#
- 2.Rxe6#
- 2.Qg3#
- 1...Sc3
- 2.Rg5#
- 2.Rxe6#
- 2.Qxc3#
- 2.Qg3#
- 1...Sg3
- 2.Rxe6#
- 2.Qc3#
- 2.Qxg3#
- 1...Sg5
- 2.Rxg5#
- 2.Qc3#
- 2.Qg3#
- 1...Sd6
- 2.Bd4#
- 2.Rxe6#
- 2.Qc3#
- 2.Qg3#
- 1...Sf6
- 2.Rg5#
- 2.Qc3#
- 2.Qg3#
- 1...a3!
- 1...Kf5
- 1.Rxe4+?
- 1...Kf5
- 2.Rg5#
- 2.Rf6#
- 2.Qf2#
- 2.Qf1#
- 1...Kd6
- 2.Rexe6#
- 2.Rgxe6#
- 1...Sxe4!
- 1...Kf5
- 1.Rg5+?
- 1...Sxg5
- 2.Qg3#
- 1...Kd6!
- 1...Sxg5
- 1.Rxe6+?
- 1...Kf5
- 2.Rf4#
- 2.Qf2#
- 2.Qf1#
- 1...Sxe6!
- 1...Kf5
- 1.Rf6?
- 1...Kd6
- 2.Rxe6#
- 1...Sxf6
- 2.Qg3#
- 1...Sd2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sg5
- 2.Qg3#
- 1...Sd6
- 2.Qc3#
- 2.Qg3#
- 1...Sb3
- 2.Rxe4#
- 1...Sd3
- 2.Rxe4#
- 1...Sa6
- 2.Rxe4#
- 1...Sb7
- 2.Rxe4#
- 1...Sd7
- 2.Rxe4#
- 1...Sf2!
- 1...Kd6
- 1.Qf2?
- threat
- 2.Qf4#
- 1...Kd6
- 2.Rxe6#
- 1...Sd3
- 2.Rxe4#
- 2.Rxe6#
- 1...Sxf2!
- threat
- 1.Qc3+?
- 1...Kf5
- 2.Rf4#
- 2.Rg5#
- 2.Rf6#
- 2.Qf6#
- 1...Kd6
- 2.Rxe6#
- 1...Sxc3!
- 1...Kf5
- 1.Qg3+?
- 1...Kf5
- 2.Rg5#
- 2.Rf6#
- 2.Qf4#
- 2.Qg5#
- 1...Sxg3!
- 1...Kf5
- 1.Qb4?
- 1...Kf5
- 2.Rg5#
- 1...Kd6
- 2.Rxe6#
- 1...Sf2
- 2.Qxc5#
- 2.Qd4#
- 2.Qf4#
- 1...Sd2
- 2.Qxc5#
- 2.Qd4#
- 2.Qf4#
- 1...Sc3
- 2.Qd4#
- 2.Qf4#
- 1...Sg3
- 2.Qxc5#
- 2.Qd4#
- 2.Qf4#
- 1...Sg5
- 2.Qxc5#
- 2.Qd4#
- 2.Qf4#
- 1...Sd6
- 2.Qc3#
- 2.Qxc5#
- 2.Qd4#
- 2.Qf4#
- 1...Sf6
- 2.Qd4#
- 2.Qf4#
- 1...Sb3
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...axb4!
- 1...Kf5
- 1.Qxa5?
- 1...Kf5
- 2.Rg5#
- 1...Kd6
- 2.Rxe6#
- 1...Sf2
- 2.Rxe6#
- 2.Qxc5#
- 1...Sd2
- 2.Rxe6#
- 2.Qxc5#
- 1...Sc3
- 2.Rxe6#
- 1...Sg3
- 2.Rxe6#
- 2.Qxc5#
- 1...Sg5
- 2.Qxc5#
- 1...Sd6
- 2.Rxe6#
- 2.Qc3#
- 2.Qxc5#
- 1...Sf6!
- 1...Kf5
- 1.Qf1?
- threat
- 2.Qf4#
- 1...Kd6
- 2.Rxe6#
- 1...Sd3
- 2.Rxe4#
- 2.Rxe6#
- 1...Sf2!
- threat
- 1.Qh1?
- 1...Kf5
- 2.Rg5#
- 1...Kd6
- 2.Rxe6#
- 1...Sf2
- 2.Qh2#
- 1...Sd2
- 2.Qh2#
- 1...Sc3
- 2.Qh2#
- 1...Sg5
- 2.Qh2#
- 1...Sd6
- 2.Qh2#
- 1...Sf6
- 2.Qh2#
- 1...Sb3
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Sg3!
- 1...Kf5
- 1.Bxe4?
- Keys
- 1.Kf3!
- 1...Kd4
- 2.Qc3#
- 1...Kf5
- 2.Rg5#
- 1...Kd6
- 2.Rxe6#
- 1...Sb3
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sa6
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Kd4
- 1.Kf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 5
- Sets
- K(e);P-FLIGHT,P_SPINS(b)::R1(J)
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- S(b);N_GUARD::QAB(A)
- S(b);N_GUARD::QAB(A),XS(b)
- Tries
- Try
- B(C);XS(b)
- Threat
- QAB(A)
- Vars
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- Refutation
- S(d);XB(C)
- Try
- B(D);XS(d)
- Vars
- K(e);P-FLIGHT,P_SPINS(b)::R1(J)
- S(b);N_GUARD,XB(D)::QAB(A)
- Refutation
- P(a);
- Try
- R(F);CHECK,XS(b)
- Refutation
- S(d);XR(F)
- Try
- R(J);CHECK
- Vars
- S(b);XR(J)::QAB(A)
- Refutation
- K(e);P_SPINS(d),S_FLIGHT
- Try
- R(J);CHECK,XP(f)
- Refutation
- S(d);XR(J)
- Try
- R(J);
- Vars
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- S(b);N_GUARD,XR(J)::QAB(A)
- S(b);N_GUARD::QAB(A)
- S(b);N_GUARD::QAB(A),XS(b)
- S(d);N_GUARD::R1(F),XS(b)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- S(b);XQ(A)
- Try
- Q(A);
- Vars
- K(e);P-FLIGHT,P_SPINS(b)::R1(J)
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- S(d);N_GUARD::QAR1(A),XS(b)
- Refutation
- P(c);XQ(A)
- Try
- Q(A);P_PINS(d),XP(c)
- Vars
- K(e);N_SPINS(d),P-FLIGHT,P_SPINS(b)::R1(J)
- K(e);P_SPINP(f),S_FLIGHT::R1(J),XP(f)
- S(b);::R1(J),XP(f)
- S(b);N_GUARD::QAR2(A),XS(d)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- Refutation
- S(b);
- Try
- Q(A);
- Vars
- K(e);P-FLIGHT,P_SPINS(b)::R1(J)
- K(e);P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- S(b);N_GUARD::QAB(A)
- S(b);N_GUARD,SBLOCK::QAB(A)
- S(d);N_GUARD::QAR1(A),XS(b)
- Refutation
- S(b);
- Try
- Actual
- K(E);P-FLIGHT,P_PINS(b)
- Vars
- K(e);S_FLIGHT::QAB1(A)
- K(e);P-FLIGHT::R1(J)
- K(e);N_SPINS(b),P_SPINP(f),P_SPINS(d),S_FLIGHT::R1(J),XP(f)
- S(d);N_GUARD::QAR1(A),XS(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).