MESON Chess Problem Database
Problem Display
PID: 173609 (B4R2/4pN1n/2n2b2/1Q2P3/4P1P1/RNq2kPK/4pp1P/2Bbrr2 w - - 0 1)
Boros, Sandor
Wiadomoscy Szachowy, 1936
#2
13 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Sd2#
- 2.Qd3#
- 1...Qb2
- 2.Sd2#
- 2.Qd3#
- 1...Qd2
- 2.Sxd2#
- 1...Qb4
- 2.Sd2#
- 2.Qd3#
- 1...Qd4
- 2.Sd2#
- 1...Qa5
- 2.Sd2#
- 2.Qd3#
- 1...Qxe5
- 2.Sd2#
- 2.Qd3#
- 1...Qxc1
- 2.Sd2#
- 1...Qc2
- 2.Sd2#
- 1...Qd3
- 2.Qxd3#
- 1...Qe3
- 2.Sd2#
- 1...Qc4
- 2.Sd2#
- 1...Qc5
- 2.Sd2#
- 1...Bh4
- 2.Sg5#
- 1...Bxe5
- 2.Sg5#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Bh8
- 2.Sg5#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- 1...Sxe5
- 2.Sd4#
- 1...Sa7
- 2.Sd4#
- 1...Sb8
- 2.Sd4#
- 1...Sd8
- 2.Sd4#
- 1...Sg5+
- 2.Sxg5#
- 1...Qa1
- Tries
- 1.Sd4+?
- 1...Sxd4
- 2.Rxc3#
- 1...Kxe4!
- 1...Sxd4
- 1.Qxc6?
- threat
- 2.Sd4#
- 2.Qxc3#
- 1...Sg5+
- 2.Sxg5#
- 1...Qxe5
- 2.Sd2#
- 2.Sd4#
- 2.Sxe5#
- 1...Qxc1
- 2.Sd2#
- 2.Sd4#
- 1...Qxc6
- 2.Sd2#
- 1...Bxb3
- 2.Qxc3#
- 1...Bxe5
- 2.Sxe5#
- 2.Sg5#
- 1...Qd2
- 2.Sxd2#
- 2.Sd4#
- 1...Qa1
- 2.Sd2#
- 2.Sd4#
- 1...Qb2
- 2.Sd2#
- 2.Sd4#
- 1...Qb4
- 2.Sd2#
- 2.Sd4#
- 1...Qd4
- 2.Sd2#
- 2.Sxd4#
- 1...Qa5
- 2.Sd2#
- 2.Sd4#
- 1...Qc2
- 2.Sd2#
- 2.Sd4#
- 1...Qd3
- 2.Sd4#
- 1...Qe3
- 2.Sd2#
- 2.Sd4#
- 1...Qc4
- 2.Sd2#
- 2.Sd4#
- 1...Qc5
- 2.Sd2#
- 2.Sd4#
- 1...Bc2
- 2.Sd4#
- 1...Bg5
- 2.Sd4#
- 2.Sxg5#
- 1...Qxb3!
- threat
- 1.Sd4+?
- Keys
- 1.e6!
- threat
- 2.Qf5#
- 1...Sg5+
- 2.Sxg5#
- 1...Kxe4
- 2.Qf5#
- 1...Qxc1
- 2.Sd2#
- 1...Qd2
- 2.Sxd2#
- 1...Qa5
- 2.Sd2#
- 2.Qd3#
- 1...Qe5
- 2.Sd2#
- 2.Qd3#
- 1...Qe3
- 2.Sd2#
- 1...Qc5
- 2.Sd2#
- 1...Be5
- 2.Sg5#
- 1...Bg5
- 2.Sxg5#
- 1...Sd4
- 2.Se5#
- 1...Se5
- 2.Sd4#
- threat
- 1.e6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(f);::R(C)+S(D),DCHECK,XQ(f)
- Q(f);::R(C)+S(D),DCHECK
- Q(f);XB(A)::R(C)+S(D),DCHECK
- Q(f);N_GUARD::QAR2(I),XQ(f)
- Q(f);::S(D)
- B(i);::R(M)+S(K),DCHECK
- B(i);XP(J)::R(M)+S(K),DCHECK
- B(i);::R(M)+S(K),DCHECK,XB(i)
- S(h);N_GUARD::S(D)
- S(h);N_GUARD::S(D),XS(h)
- S(h);N_GUARD,XP(J)::S(D)
- S(k);CHECK,N_GUARD::S(K),XS(k)
- Tries
- Try
- S(D);CHECK,P_PINQ(f)
- Vars
- S(h);XS(D)::R(C),XQ(f)
- Refutation
- K(g);N_SPINQ(f),P_PINP(E),P_SPINS(h),S_FLIGHT,XP(G)
- Try
- Q(I);XS(h)
- Threat
- DUALS(2)
- Vars
- S(k);CHECK,N_GUARD::S(K),XS(k)
- Q(f);XQ(I)::R(C)+S(D),DCHECK
- B(a);XS(D)::QAR(I),XQ(f)
- Q(f);::S(D)
- B(a);::S(D)
- Refutation
- Q(f);P_SPINQ(f),XS(D)
- Try
- Actual
- P(J);
- Threat
- QAR2(I)
- Vars
- S(k);CHECK,N_GUARD::S(K),XS(k)
- K(g);P_PINP(E),P_SPINS(h),S_FLIGHT,XP(G)::QAB1(I)
- Q(f);XB(A)::R(C)+S(D),DCHECK
- Q(f);::R(C)+S(D),DCHECK,XQ(f)
- Q(f);::S(D)
- Q(f);::R(C)+S(D),DCHECK
- B(i);::R(M)+S(K),DCHECK
- B(i);::R(M)+S(K),DCHECK,XB(i)
- S(h);N_GUARD,S_CUTQ(f)::S(K)
- S(h);N_GUARD,S_CUTB(i)::S(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).