MESON Chess Problem Database
Problem Display
PID: 160869 (8/1b4p1/3Q4/2PNP1K1/3bk1P1/1Np1P2R/2qpB2B/3r4 w - - 0 1)
Apro, Laszlo
Bajai TSB, 1954
#2
11 + 8
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Bf3#
- 1...Bxe3+
- 2.Rxe3#
- 1...Bxc5
- 2.Sxc5#
- 1...Bxe5
- 2.Qxe5#
- 1...Bxd5
- 2.Qg6#
- 1...g6
- 2.Sf6#
- 1...Qd3
- Tries
- 1.Sb4?
- threat
- 2.Qxd4#
- 2.Qg6#
- 1...Bxc5
- 2.Sxc5#
- 2.Qg6#
- 1...Bxe5
- 2.Qxe5#
- 2.Qg6#
- 1...Qd3
- 2.Bxd3#
- 2.Qg6#
- 1...Rf1
- 2.Qxd4#
- 1...Bd5
- 2.Qxd5#
- 2.Qg6#
- 1...Bc8
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...g6
- 2.Qxd4#
- 2.Qxg6#
- 1...Bxe3+!
- threat
- 1.Sb6?
- threat
- 2.Qxd4#
- 2.Qg6#
- 1...Bxc5
- 2.Sxc5#
- 2.Qg6#
- 1...Bxe5
- 2.Qxe5#
- 2.Qg6#
- 1...Qd3
- 2.Qg6#
- 1...Rf1
- 2.Qxd4#
- 1...Bd5
- 2.Qxd5#
- 2.Qg6#
- 1...Bc8
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...g6
- 2.Qxd4#
- 2.Qxg6#
- 1...Bxe3+!
- threat
- 1.Sc7?
- threat
- 2.Qxd4#
- 2.Qg6#
- 1...Bxc5
- 2.Sxc5#
- 2.Qg6#
- 1...Bxe5
- 2.Qxe5#
- 2.Qg6#
- 1...Qd3
- 2.Qg6#
- 1...Rf1
- 2.Qxd4#
- 1...Bd5
- 2.Qxd5#
- 2.Qg6#
- 1...Bc8
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...g6
- 2.Qxd4#
- 2.Qxg6#
- 1...Bxe3+!
- threat
- 1.Se7?
- threat
- 2.Qxd4#
- 2.Qg6#
- 1...Bxc5
- 2.Sxc5#
- 2.Qg6#
- 1...Bxe5
- 2.Qxe5#
- 2.Qg6#
- 1...Qd3
- 2.Qg6#
- 1...Rf1
- 2.Qxd4#
- 1...Bd5
- 2.Qxd5#
- 2.Qg6#
- 1...Bc8
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...g6
- 2.Qxd4#
- 2.Qxg6#
- 1...Bxe3+!
- threat
- 1.Rf3?
- threat
- 2.Rf4#
- 1...Bxe3+
- 2.Rxe3#
- 1...Bxe5
- 2.Qxe5#
- 1...Bxd5
- 2.Qg6#
- 1...Rf1!
- threat
- 1.Qc6?
- threat
- 2.Sxc3#
- 2.Sf6#
- 1...Bxe3+
- 2.Rxe3#
- 1...Bxc6!
- threat
- 1.exd4?
- threat
- 2.Re3#
- 1...Bxd5
- 2.Qg6#
- 1...Qd3
- 2.Bxd3#
- 1...Qxb3!
- threat
- 1.Sb4?
- Keys
- 1.Sf4!
- threat
- 2.Qxd4#
- 1...Bxe3
- 2.Bf3#
- 1...Bxc5
- 2.Sxc5#
- 1...Bxe5
- 2.Qg6#
- 1...Qd3
- 2.Bxd3#
- 1...Bd5
- 2.Qxd5#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- Q(b);SBLOCK::B(A)
- B(e);CHECK,OGATE,XP(D)::R1(E),XB(e)
- B(e);XP(G)::S(C),XB(e)
- B(e);OGATE,XP(I)::QAR1(K),XB(e)
- B(g);SBLOCK,XS(H)::QAB(K)
- P(h);N_GUARD::S(H)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(K),XB(e)
- Refutation
- B(e);CHECK,XP(D)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(b);::QAB(K)
- R(a);::QAR1(K),XB(e)
- Refutation
- B(e);CHECK,XP(D)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(b);::QAB(K)
- R(a);::QAR1(K),XB(e)
- Refutation
- B(e);CHECK,XP(D)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(b);::QAB(K)
- R(a);::QAR1(K),XB(e)
- Refutation
- B(e);CHECK,XP(D)
- Try
- R(E);
- Threat
- R1(E)
- Vars
- B(e);CHECK,OGATE,XP(D)::R1(E),XB(e)
- B(e);OGATE,XP(I)::QAR1(K),XB(e)
- B(g);SBLOCK,XS(H)::QAB(K)
- Refutation
- R(a);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,OGATE,XP(D)::R1(E),XB(e)
- Refutation
- B(g);XQ(K)
- Try
- P(D);XB(e)
- Threat
- R1(E)
- Vars
- B(g);SBLOCK,XS(H)::QAB(K)
- Q(b);N_GUARD::B(A),XQ(b)
- Refutation
- Q(b);XS(C)
- Try
- Actual
- S(H);
- Threat
- QAR1(K),XB(e)
- Vars
- B(e);P_PINS(H),SBLOCK,XP(D)::B(A)
- B(e);XP(G)::S(C),XB(e)
- B(e);SBLOCK,XP(I)::QAB(K)
- Q(b);N_GUARD::B(A),XQ(b)
- B(g);N_GUARD::QAB1(K),XB(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).