MESON Chess Problem Database
Problem Display
PID: 173664 (K3N3/1Qpp4/6pB/b2B1k1n/1n1P3p/2N2b1r/p5R1/5R2 w - - 0 1)
Boros, Sandor
2nd Prize, Swiat Szachowy, 1931
#2
9 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sxd5
- 2.Qxd5#
- 1...Sf4
- 2.Rg5#
- 1...Sf6
- 2.Sg7#
- 1...c5
- 2.Qxd7#
- 1...c6
- 2.Qxd7#
- 1...d6
- 2.Qc8#
- 1...Sxd5
- Tries
- 1.Bb3?
- threat
- 2.Qe4#
- 1...Sd5
- 2.Qxd5#
- 1...Sg3
- 2.Qxf3#
- 1...d5
- 2.Qc8#
- 1...Sf4
- 2.Rg5#
- 1...Sf6
- 2.Sg7#
- 1...c6
- 2.Qxd7#
- 1...Sc6!
- threat
- 1.Bc4?
- threat
- 2.Qe4#
- 1...Sd5
- 2.Qxd5#
- 1...Sg3
- 2.Qxf3#
- 1...d5
- 2.Qc8#
- 1...Sf4
- 2.Rg5#
- 1...Sf6
- 2.Sg7#
- 1...c6
- 2.Qxd7#
- 1...Sc6!
- threat
- 1.Be6+?
- 1...dxe6
- 2.Qe4#
- 1...Kxe6!
- 1...dxe6
- 1.Bf7?
- threat
- 2.Qe4#
- 1...Sg3
- 2.Qxf3#
- 1...Sd5
- 2.Qxd5#
- 1...Sf4
- 2.Rg5#
- 1...Sf6
- 2.Sg7#
- 1...c6
- 2.Qxd7#
- 1...d5
- 2.Qc8#
- 1...Sc6!
- threat
- 1.Bg8?
- threat
- 2.Qe4#
- 1...Sg3
- 2.Qxf3#
- 1...Sd5
- 2.Qxd5#
- 1...Sf4
- 2.Rg5#
- 1...Sf6
- 2.Sg7#
- 1...c6
- 2.Qxd7#
- 1...d5
- 2.Qc8#
- 1...Sc6!
- threat
- 1.Rxf3+?
- 1...Sf4
- 2.Rg5#
- 2.Rxf4#
- 1...Rxf3!
- 1...Sf4
- 1.Qxc7?
- threat
- 2.Rg5#
- 2.Qe5#
- 2.Qxd7#
- 1...Sxd5
- 2.Qe5#
- 2.Qxd7#
- 1...Rg3
- 2.Qxd7#
- 1...Sg3
- 2.Qf4#
- 2.Qxd7#
- 1...g5
- 2.Rxg5#
- 1...Sc6
- 2.Rg5#
- 2.Qxd7#
- 1...Sd3
- 2.Rg5#
- 2.Qxd7#
- 1...Sf4
- 2.Rg5#
- 2.Qxf4#
- 2.Qe5#
- 1...Sf6
- 2.Sd6#
- 2.Sg7#
- 2.Rg5#
- 2.Qf4#
- 2.Qe5#
- 1...Sg7
- 2.Rg5#
- 2.Qf4#
- 2.Qe5#
- 1...d6
- 2.Qd7#
- 2.Qc8#
- 1...Bxc7!
- threat
- 1.Bb3?
- Keys
- 1.Bxa2!
- threat
- 2.Qe4#
- 1...Sd5
- 2.Qxd5#
- 1...Sg3
- 2.Qxf3#
- 1...d5
- 2.Qc8#
- 1...Sc6
- 2.Qb1#
- 1...Sf4
- 2.Rg5#
- 1...Sf6
- 2.Sg7#
- 1...c6
- 2.Qxd7#
- threat
- 1.Bxa2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- S(d);OGATE,XB(E)::QAR2(G),XS(d)
- S(h);N_SPINB(b),SBLOCK::R1(B)
- S(h);N_GUARD,SBLOCK::S(I)
- P(j);OGATE::QAB(G),XP(k)
- P(k);OGATEB::QAB(G)
- Tries
- Try
- B(E);P_SPINQ(G)
- Threat
- QAB1(G)
- Vars
- S(d);N_GUARD,N_PINQ(G)::QAR2(G),XS(d)
- S(h);N_GUARD,S_CUTR(c)::QAR2(G),XB(b)
- P(k);N_PINQ(G)::QAB(G)
- S(h);N_SPINB(b),SBLOCK::R1(B)
- S(h);N_GUARD,SBLOCK::S(I)
- P(j);N_PINQ(G)::QAB(G),XP(k)
- Refutation
- S(d);N_PINQ(G)
- Try
- B(E);P_SPINQ(G)
- Threat
- QAB1(G)
- Vars
- S(d);N_GUARD,N_PINQ(G)::QAR2(G),XS(d)
- S(h);N_GUARD,S_CUTR(c)::QAR2(G),XB(b)
- P(k);N_PINQ(G)::QAB(G)
- S(h);N_SPINB(b),SBLOCK::R1(B)
- S(h);N_GUARD,SBLOCK::S(I)
- P(j);N_PINQ(G)::QAB(G),XP(k)
- Refutation
- S(d);N_PINQ(G)
- Try
- B(E);CHECK,P_SPINQ(G)
- Vars
- P(k);XB(E)::QAB1(G)
- Refutation
- K(g);N_SPINB(b),S_FLIGHT,XB(E)
- Try
- B(E);P_SPINQ(G)
- Threat
- QAB1(G)
- Vars
- S(h);N_GUARD,S_CUTR(c)::QAR2(G),XB(b)
- S(d);N_GUARD,N_PINQ(G)::QAR2(G),XS(d)
- S(h);N_SPINB(b),SBLOCK::R1(B)
- S(h);N_GUARD,SBLOCK::S(I)
- P(j);N_PINQ(G)::QAB(G),XP(k)
- P(k);N_PINQ(G)::QAB(G)
- Refutation
- S(d);N_PINQ(G)
- Try
- B(E);P_SPINQ(G)
- Threat
- QAB1(G)
- Vars
- S(h);N_GUARD,S_CUTR(c)::QAR2(G),XB(b)
- S(d);N_GUARD,N_PINQ(G)::QAR2(G),XS(d)
- S(h);N_SPINB(b),SBLOCK::R1(B)
- S(h);N_GUARD,SBLOCK::S(I)
- P(j);N_PINQ(G)::QAB(G),XP(k)
- P(k);N_PINQ(G)::QAB(G)
- Refutation
- S(d);N_PINQ(G)
- Try
- R(A);CHECK,XB(b)
- Refutation
- R(c);XR(A)
- Try
- Q(G);P_SPINB(E),XP(j)
- Threat
- DUALS(3)
- Vars
- R(c);::QAB(G),XP(k)
- P(i);::R1(B),XP(i)
- Refutation
- B(f);XQ(G)
- Try
- Actual
- B(E);P_SPINQ(G),XP(a)
- Threat
- QAB1(G)
- Vars
- S(d);N_GUARD,N_PINQ(G)::QAR2(G),XS(d)
- S(h);N_GUARD,S_CUTR(c)::QAR2(G),XB(b)
- P(k);N_PINQ(G)::QAB(G)
- S(d);N_PINQ(G)::QAB(G)
- S(h);N_SPINB(b),SBLOCK::R1(B)
- S(h);N_GUARD,SBLOCK::S(I)
- P(j);N_PINQ(G)::QAB(G),XP(k)
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).