MESON Chess Problem Database
Problem Display
PID: 70420 (6N1/4p1R1/K3Q1r1/1p2npk1/1Rn2p1p/5B1p/7B/8 w - - 0 1)
Buchwald, Julius
Chess, 1950
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxg7
- 2.Qh6#
- 1...Sb2
- 2.Bxf4#
- 1...Sd2
- 2.Bxf4#
- 1...Sa3
- 2.Bxf4#
- 1...Se3
- 2.Bxf4#
- 1...Sa5
- 2.Bxf4#
- 1...Sb6
- 2.Bxf4#
- 2.Qxe7#
- 1...Sd6
- 2.Bxf4#
- 2.Qxe7#
- 1...Sd3
- 2.Rxg6#
- 2.Qxg6#
- 1...Sxf3
- 2.Qxg6#
- 1...Sg4
- 2.Qxg6#
- 1...Sc6
- 2.Rxg6#
- 2.Qxg6#
- 1...Sd7
- 2.Rxg6#
- 2.Qxg6#
- 1...Sf7
- 2.Rxg6#
- 2.Qxg6#
- 1...Rxg7
- Tries
- 1.Ka7?
- threat
- 2.Qxe7#
- 1...Rxg7
- 2.Qh6#
- 1...Sxf3
- 2.Qxg6#
- 1...Sg4
- 2.Qxg6#
- 1...Sd7
- 2.Rxg6#
- 2.Qxg6#
- 1...Sc6+!
- threat
- 1.Bd1?
- 1...Rxg7
- 2.Qh6#
- 1...Sf3
- 2.Qxg6#
- 1...Sg4
- 2.Qxg6#
- 1...Sb2
- 2.Bxf4#
- 1...Sd2
- 2.Bxf4#
- 1...Sa3
- 2.Bxf4#
- 1...Se3
- 2.Bxf4#
- 1...Sa5
- 2.Bxf4#
- 1...Sb6
- 2.Bxf4#
- 2.Qxe7#
- 1...Sd6
- 2.Bxf4#
- 2.Qxe7#
- 1...Sd3
- 2.Rxg6#
- 2.Qxg6#
- 1...Sc6
- 2.Rxg6#
- 2.Qxg6#
- 1...Sd7
- 2.Rxg6#
- 2.Qxg6#
- 1...Sf7
- 2.Rxg6#
- 2.Qxg6#
- 1...f3!
- 1...Rxg7
- 1.Be2?
- 1...Rxg7
- 2.Qh6#
- 1...Sf3
- 2.Qxg6#
- 1...Sg4
- 2.Qxg6#
- 1...Sb2
- 2.Bxf4#
- 1...Sd2
- 2.Bxf4#
- 1...Sa3
- 2.Bxf4#
- 1...Se3
- 2.Bxf4#
- 1...Sa5
- 2.Bxf4#
- 1...Sb6
- 2.Bxf4#
- 2.Qxe7#
- 1...Sd6
- 2.Bxf4#
- 2.Qxe7#
- 1...Sd3
- 2.Rxg6#
- 2.Qxg6#
- 1...Sc6
- 2.Rxg6#
- 2.Qxg6#
- 1...Sd7
- 2.Rxg6#
- 2.Qxg6#
- 1...Sf7
- 2.Rxg6#
- 2.Qxg6#
- 1...f3!
- 1...Rxg7
- 1.Rxc4?
- threat
- 2.Bxf4#
- 1...Sxf3
- 2.Qxg6#
- 1...Sxc4
- 2.Rxg6#
- 2.Qxg6#
- 1...Sg4
- 2.Qxg6#
- 1...Sd3
- 2.Rxg6#
- 2.Qxg6#
- 1...bxc4!
- threat
- 1.Qd6?
- 1...Rxg7
- 2.Qh6#
- 1...Sxd6
- 2.Bxf4#
- 1...Sxf3
- 2.Qxg6#
- 1...Sg4
- 2.Qxg6#
- 1...Sb2
- 2.Bxf4#
- 1...Sd2
- 2.Bxf4#
- 1...Sa3
- 2.Bxf4#
- 1...Se3
- 2.Bxf4#
- 1...Sa5
- 2.Bxf4#
- 1...Sb6
- 2.Bxf4#
- 2.Qxe7#
- 1...Sd3
- 2.Rxg6#
- 2.Qxg6#
- 1...Sc6
- 2.Bxf4#
- 2.Rxg6#
- 2.Qxf4#
- 2.Qxg6#
- 1...Sd7
- 2.Bxf4#
- 2.Rxg6#
- 2.Qxg6#
- 1...Sf7
- 2.Bxf4#
- 2.Rxg6#
- 2.Qxg6#
- 1...e6
- 2.Qe7#
- 2.Qd8#
- 1...exd6!
- 1...Rxg7
- 1.Ka7?
- Keys
- 1.Qb6!
- 1...Rxg7
- 2.Qh6#
- 1...Sxb6
- 2.Bxf4#
- 1...Sxf3
- 2.Qxg6#
- 1...Sg4
- 2.Qxg6#
- 1...Sb2
- 2.Bxf4#
- 1...Sd2
- 2.Bxf4#
- 1...Sa3
- 2.Bxf4#
- 1...Se3
- 2.Bxf4#
- 1...Sa5
- 2.Bxf4#
- 1...Sd6
- 2.Bxf4#
- 1...Sd3
- 2.Rxg6#
- 2.Qxg6#
- 1...Sc6
- 2.Qg1#
- 1...Sd7
- 2.Rxg6#
- 2.Qxg6#
- 1...Sf7
- 2.Rxg6#
- 2.Qxg6#
- 1...e6
- 2.Qd8#
- 1...Rxg7
- 1.Qb6!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(i);N_PINQ(E),N_SPINR(i),XR(F)::QAB1(E)
- S(b);::B(A),XP(c)
- S(f);N_GUARD,XB(B)::QAR1(E),XR(i)
- S(f);N_GUARD::QAR1(E),XR(i)
- Tries
- Try
- K(D);N_SPINQ(E),P-FLIGHT
- Threat
- QAB(E),XP(j)
- Vars
- R(i);N_SPINR(i),OGATE,XR(F)::QAB1(E)
- S(f);N_GUARD,XB(B)::QAR1(E),XR(i)
- S(f);N_GUARD::QAR1(E),XR(i)
- Refutation
- S(f);CHECK
- Try
- B(B);
- Vars
- R(i);N_PINQ(E),N_SPINR(i),XR(F)::QAB1(E)
- S(f);N_GUARD::QAR1(E),XR(i)
- S(b);::B(A),XP(c)
- Refutation
- P(c);
- Try
- B(B);
- Vars
- R(i);N_PINQ(E),N_SPINR(i),XR(F)::QAB1(E)
- S(f);N_GUARD::QAR1(E),XR(i)
- S(b);::B(A),XP(c)
- Refutation
- P(c);
- Try
- R(C);XS(b)
- Threat
- B(A),XP(c)
- Vars
- S(f);N_GUARD,XB(B)::QAR1(E),XR(i)
- S(f);N_GUARD::QAR1(E),XR(i)
- Refutation
- P(e);XR(C)
- Try
- Q(E);
- Vars
- R(i);N_PINQ(E),N_SPINR(i),XR(F)::QAB1(E)
- S(b);XQ(E)::B(A),XP(c)
- S(f);N_GUARD,XB(B)::QAR1(E),XR(i)
- S(f);N_GUARD::QAR1(E),XR(i)
- S(b);::B(A),XP(c)
- Refutation
- P(j);XQ(E)
- Try
- Actual
- Q(E);
- Vars
- R(i);N_PINQ(E),N_SPINR(i),XR(F)::QAB1(E)
- S(b);XQ(E)::B(A),XP(c)
- S(f);N_GUARD,XB(B)::QAR1(E),XR(i)
- S(f);N_GUARD::QAR1(E),XR(i)
- S(b);::B(A),XP(c)
- S(b);N_PINQ(E)::B(A),XP(c)
- S(f);N_PINQ(E)::QAR(E)
- P(j);N_PINQ(E)::QAB(E)
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).