MESON Chess Problem Database
Problem Display
PID: 222215 (2n4K/4N1Pp/4B2r/P3k1Np/RQ5B/7p/2p1Pb1q/3n1R2 w - - 0 1)
Buchwald, Julius
US Problem Bulletin, 1964
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Qf4#
- 1...Qf4
- 2.Qxf4#
- 1...Qh1
- 2.Qf4#
- 1...Qg2
- 2.Qf4#
- 1...Rxe6
- 2.Sf3#
- 2.Sf7#
- 1...Rf6
- 2.Sc6#
- 1...Be1
- 2.Sc6#
- 2.Rf5#
- 2.Qc5#
- 2.Qd4#
- 1...Bg1
- 2.Sc6#
- 2.Rf5#
- 1...Be3
- 2.Sc6#
- 2.Rf5#
- 1...Bg3
- 2.Sc6#
- 2.Rf5#
- 2.Qc5#
- 2.Qd4#
- 1...Bd4
- 2.Sc6#
- 2.Rf5#
- 2.Qxd4#
- 1...Bxh4
- 2.Sc6#
- 2.Rf5#
- 2.Qc5#
- 2.Qd4#
- 1...Bc5
- 2.Qxc5#
- 1...Bb6
- 2.Sc6#
- 2.Rf5#
- 1...Ba7
- 2.Sc6#
- 2.Rf5#
- 1...Se3
- 2.Qd4#
- 1...Qg1
- Tries
- 1.Rxf2?
- threat
- 2.Sc6#
- 2.Rf5#
- 2.Qc5#
- 2.Qd4#
- 1...Rxe6
- 2.Sf3#
- 2.Sf7#
- 2.Rf5#
- 2.Qc5#
- 2.Qd4#
- 1...Sxf2
- 2.Qd4#
- 1...Sxe7
- 2.Qd4#
- 2.Qb8#
- 1...Qf4
- 2.Qxf4#
- 1...c1Q
- 2.Rf5#
- 2.Qd4#
- 1...c1R
- 2.Rf5#
- 2.Qd4#
- 1...Rf6
- 2.Sc6#
- 2.Qc5#
- 2.Qd4#
- 1...Qh1
- 2.Bg3#
- 2.Rf5#
- 2.Qd4#
- 2.Qf4#
- 1...Qg2
- 2.Rf5#
- 2.Qd4#
- 2.Qf4#
- 1...Sc3
- 2.Sc6#
- 2.Rf5#
- 2.Qd4#
- 1...Se3
- 2.Sc6#
- 2.Qd4#
- 1...Sb6
- 2.Sc6#
- 2.Rf5#
- 2.Qd4#
- 1...Sd6
- 2.Sc6#
- 2.Qc5#
- 2.Qd4#
- 1...Sa7
- 2.Rf5#
- 2.Qc5#
- 2.Qd4#
- 2.Qb8#
- 1...Qxf2!
- threat
- 1.Qc3+?
- 1...Kd6
- 2.Sf5#
- 2.Sxc8#
- 1...Bd4
- 2.Qxd4#
- 1...Sxc3!
- 1...Kd6
- 1.Qc5+?
- 1...Kf6
- 2.g8S#
- 1...Bxc5!
- 1...Kf6
- 1.Qe4+?
- 1...Kf6
- 2.Sxh3#
- 2.Sf7#
- 2.Sxh7#
- 2.Sd5#
- 2.Sg8#
- 2.g8S#
- 1...Kd6!
- 1...Kf6
- 1.Qb5+?
- 1...Kf6
- 2.g8S#
- 1...Bc5
- 2.Qxc5#
- 1...Kd6!
- 1...Kf6
- 1.Qb8+?
- 1...Kf6
- 2.g8S#
- 1...Sd6!
- 1...Kf6
- 1.e3?
- threat
- 2.Qd4#
- 1...Bxe3
- 2.Sc6#
- 2.Rf5#
- 1...Qf4
- 2.Qxf4#
- 1...Kf6!
- threat
- 1.g8Q?
- threat
- 2.Sf3#
- 1...Kf6
- 2.Qg7#
- 1...Bxh4
- 2.Sc6#
- 2.Rf5#
- 2.Qc5#
- 2.Qd4#
- 1...Rf6
- 2.Sc6#
- 1...Qf4
- 2.Qxf4#
- 1...Qh1
- 2.Qf4#
- 1...Qg2
- 2.Qf4#
- 1...Bd4
- 2.Sc6#
- 2.Rf5#
- 2.Qxd4#
- 1...Bc5
- 2.Qxc5#
- 1...Qg3!
- threat
- 1.Rxf2?
- Keys
- 1.Qc4!
- threat
- 2.Sf7#
- 1...Kd6
- 2.Sf7#
- 1...Kf6
- 2.Sf7#
- 1...Rf6
- 2.Qd5#
- 1...Qf4
- 2.Qxf4#
- 1...Bd4
- 2.Qd5#
- 2.Qxd4#
- 1...Sd6
- 2.Sf3#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(d);N_GUARD::QAB1(D)
- Q(d);N_GUARD::QAB1(D),XQ(d)
- R(h);SBLOCK::S(I)
- B(c);N_GUARD::QAR2(D),XB(c)
- S(a);S_CUTB(c)::QAB1(D)
- Tries
- Try
- R(A);XB(c)
- Threat
- DUALS(4)
- Vars
- S(a);XR(A)::QAB1(D)
- Q(d);N_GUARD::QAB1(D),XQ(d)
- Refutation
- Q(d);XR(A)
- Try
- Q(D);CHECK
- Vars
- B(c);N_GUARD,P_SPINB(c)::QAB1(D),XB(c)
- Refutation
- S(a);XQ(D)
- Try
- Q(D);CHECK
- Vars
- K(f);P_SPINB(c),S_FLIGHT::P=S
- Refutation
- B(c);XQ(D)
- Try
- Q(D);CHECK
- Refutation
- K(f);S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(f);P_SPINB(c),S_FLIGHT::P=S
- B(c);N_GUARD,P_SPINB(c)::QAR2(D),XB(c)
- Refutation
- K(f);S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(f);P_SPINB(c),S_FLIGHT::P=S
- Refutation
- S(j);P_SPINS(j)
- Try
- P(B);
- Threat
- QAB1(D)
- Vars
- Q(d);N_GUARD::QAB1(D),XQ(d)
- Refutation
- K(f);P_SPINB(c),S_FLIGHT
- Try
- P(J);
- Threat
- S(G)
- Vars
- K(f);P_SPINB(c),S_FLIGHT::QAB1(J)
- R(h);SBLOCK::S(I)
- Q(d);N_GUARD::QAB1(D),XQ(d)
- Q(d);N_GUARD::QAB1(D)
- B(c);N_GUARD::QAR2(D),XB(c)
- Refutation
- Q(d);
- Try
- Actual
- Q(D);
- Threat
- S(G)
- Vars
- K(f);S_FLIGHT::S(G)
- K(f);P_SPINB(c),S_FLIGHT::B(E)+S(G)
- R(h);SBLOCK::QAR1(D)
- Q(d);N_GUARD::QAB1(D),XQ(d)
- S(j);SBLOCK::S(G)
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).