MESON Chess Problem Database
Problem Display
PID: 243467 (3N3r/3pBP2/Kp5p/1R1pkB2/6Q1/2p1q3/3PnNp1/3nRb2 w - - 0 1)
Buchwald, Julius
Parallele 50, 1948
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxd2
- 2.Qe4#
- 1...Qxf2
- 2.Qe4#
- 1...Qc5
- 2.Sd3#
- 1...Qg5
- 2.Sd3#
- 2.Qe4#
- 2.d4#
- 1...Qd3
- 2.Sxd3#
- 1...Qf3
- 2.d4#
- 1...Qg3
- 2.Qe4#
- 2.d4#
- 1...Qh3
- 2.Qe4#
- 2.d4#
- 1...Qe4
- 2.Qxe4#
- 1...Sc1
- 2.d4#
- 1...Sg1
- 2.d4#
- 1...Sg3
- 2.d4#
- 1...d6
- 2.Sc6#
- 1...Qxd2
- Tries
- 1.Bxd7?
- threat
- 2.Sc6#
- 1...Qc5
- 2.Sd3#
- 1...Sd4
- 2.Qg3#
- 1...Rxd8!
- threat
- 1.Bd6+?
- 1...Kf6
- 2.Qg6#
- 1...Kxd6!
- 1...Kf6
- 1.Rxe2?
- threat
- 2.Sd3#
- 2.d4#
- 1...Qxe2
- 2.d4#
- 1...Sxf2
- 2.d4#
- 1...cxd2
- 2.Sd3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Sb2
- 2.Rxe3#
- 2.d4#
- 1...Bxe2!
- threat
- 1.Qg7+?
- 1...Kxf5
- 2.Qf6#
- 1...Kf4!
- 1...Kxf5
- 1.dxe3?
- threat
- 2.Sd3#
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sc1
- 2.Qe4#
- 2.Qf4#
- 1...Sg1
- 2.Qe4#
- 2.Qf4#
- 1...Sg3
- 2.Qf4#
- 1...Sd4
- 2.Qe4#
- 2.Qf4#
- 2.exd4#
- 1...Sf4
- 2.Qxf4#
- 1...Sxf2!
- threat
- 1.f8Q?
- threat
- 2.Sf7#
- 2.Bd6#
- 2.Bf6#
- 2.Qfg7#
- 2.Qf6#
- 2.Qxh8#
- 1...Qf4
- 2.Bf6#
- 2.Qfg7#
- 2.Qgg7#
- 2.Qf6#
- 2.Qxh8#
- 1...Qe4
- 2.Bf6#
- 2.Qfg7#
- 2.Qxe4#
- 2.Qf6#
- 2.Qxh8#
- 1...Sf4
- 2.Bf6#
- 2.Qfg7#
- 2.Qgg7#
- 2.Qf6#
- 2.Qxh8#
- 1...Qc5
- 2.Sd3#
- 2.Sf7#
- 2.Bf6#
- 2.Qfg7#
- 2.Qf6#
- 2.Qxh8#
- 1...Qg5
- 2.Sd3#
- 2.Sf7#
- 2.Bd6#
- 2.Qe4#
- 2.d4#
- 1...Rh7
- 2.Bd6#
- 2.Bf6#
- 2.Qf6#
- 1...Rg8
- 2.Sf7#
- 2.Bd6#
- 2.Bf6#
- 2.Qf6#
- 1...d6
- 2.Sc6#
- 2.Sf7#
- 2.Bxd6#
- 2.Bf6#
- 2.Qfg7#
- 2.Qf6#
- 2.Qxh8#
- 1...Rxf8!
- threat
- 1.Bxd7?
- Keys
- 1.Be6!
- threat
- 2.Rxd5#
- 1...Qxd2
- 2.Qe4#
- 1...dxe6
- 2.Sc6#
- 1...Qe4
- 2.Qxe4#
- 1...Sf4
- 2.Qg7#
- 1...Qd4
- 2.Qf5#
- 1...Qc5
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qf3
- 2.d4#
- 1...Sc1
- 2.d4#
- 1...Sg1
- 2.d4#
- 1...Sg3
- 2.d4#
- 1...Sd4
- 2.Qg3#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(f);N_GUARD,P_SPINS(c),XP(B)::QAR1(D)
- Q(f);N_GUARD,P_SPINS(c),XS(C)::QAR1(D)
- Q(f);N_GUARD,N_SPINP(g),P_SPINS(c)::S(C)
- Q(f);N_GUARD,P_PINR(E),P_SPINS(c)::S(C),XQ(f)
- Q(f);N_GUARD,P_SPINS(c)::P(B)
- Q(f);N_GUARD::QAR1(D),XQ(f)
- S(c);N_GUARD,P_PINR(E),P_SPINQ(f)::P(B)
- P(k);N_GUARD::S(J)
- Tries
- Try
- B(F);XP(k)
- Threat
- S(J)
- Vars
- Q(f);N_GUARD,N_SPINP(g),P_SPINS(c)::S(C)
- S(c);N_GUARD,P_PINR(E),P_SPINQ(f),SBLOCK::QAB(D)
- Refutation
- R(l);XS(J)
- Try
- B(H);CHECK
- Vars
- K(h);N_SPINP(g),S_FLIGHT::QAR1(D)
- Refutation
- K(h);N_SPINP(g),S_FLIGHT,XB(H)
- Try
- R(A);P_PINQ(f),XS(c)
- Threat
- DUALS(2)
- Vars
- Q(f);N_SPINQ(f),P_PINR(E),XR(A)::P(B)
- S(a);XS(C)::P(B)
- P(e);XP(B)::S(C)
- Refutation
- B(b);N_SPINQ(f),P_PINR(E),XR(A)
- Try
- Q(D);CHECK
- Vars
- K(h);P-FLIGHT,XB(F)::QAR1(D)
- Refutation
- K(h);N_SPINP(g),S_FLIGHT
- Try
- P(B);XQ(f)
- Threat
- DUALS(2)
- Vars
- S(a);::QAR1(D)
- S(c);N_GUARD,P_PINR(E)::QAB1(D)
- S(c);N_GUARD,P_PINR(E)::QAB1(D),XS(c)
- Refutation
- S(a);XS(C)
- Try
- P(I);
- Threat
- DUALS(6)
- Refutation
- R(l);XQ(I)
- Try
- Actual
- B(F);
- Threat
- R1(E),XP(g)
- Vars
- Q(f);N_GUARD,P_SPINS(c),XP(B)::QAR1(D)
- P(k);N_GUARD,XB(F)::S(J)
- Q(f);N_GUARD::QAR1(D),XQ(f)
- S(c);P_PINR(E),P_SPINQ(f),SBLOCK::QAB(D)
- Q(f);P_SPINS(c),SBLOCK::QAR1(D)
- Q(f);N_GUARD,N_SPINP(g),P_SPINS(c)::S(C)
- Q(f);N_GUARD,P_PINR(E),P_SPINS(c)::S(C),XQ(f)
- Q(f);N_GUARD,P_SPINS(c)::P(B)
- S(c);N_GUARD,P_PINR(E),P_SPINQ(f)::P(B)
- S(c);N_GUARD,P_PINR(E),P_SPINQ(f),SBLOCK::QAB(D)
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).