MESON Chess Problem Database
Problem Display
PID: 172084 (2b5/6B1/2P3RK/5k2/pN2r1pP/Q2r1PP1/3n2N1/1Bn4q w - - 0 1)
Apro, Laszlo
Tijdschrift vd KNSB, 1957
#2
11 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxh4+
- 2.Sxh4#
- 1...Rxa3
- 2.fxg4#
- 1...Rb3
- 2.fxg4#
- 1...Rc3
- 2.fxg4#
- 1...Rde3
- 2.Sxe3#
- 2.fxg4#
- 1...Rdd4
- 2.Se3#
- 2.fxg4#
- 1...Rd5
- 2.Se3#
- 2.fxg4#
- 1...Rd6
- 2.Se3#
- 2.fxg4#
- 1...Rd7
- 2.Se3#
- 2.fxg4#
- 1...Rd8
- 2.Se3#
- 2.fxg4#
- 1...Ree3
- 2.Sxe3#
- 1...Rxb4
- 2.Se3#
- 1...Rc4
- 2.Se3#
- 1...Red4
- 2.Se3#
- 1...Rf4
- 2.Se3#
- 1...Re5
- 2.Rf6#
- 1...Be6
- 2.Rg5#
- 1...Qxh4+
- Tries
- 1.Se3+?
- 1...Rdxe3
- 2.fxg4#
- 1...Rexe3!
- 1...Rdxe3
- 1.Sxd3?
- threat
- 2.Rf6#
- 2.Qf8#
- 1...Qxh4+
- 2.Sxh4#
- 1...Sxd3
- 2.Qf8#
- 1...gxf3
- 2.Qf8#
- 1...Rb4
- 2.Se3#
- 2.Rf6#
- 1...Re7
- 2.Rf6#
- 1...Re8
- 2.Rf6#
- 1...Be6
- 2.Rg5#
- 2.Rf6#
- 1...Re6!
- threat
- 1.Bxd3?
- threat
- 2.Se3#
- 2.fxg4#
- 1...Qxh4+
- 2.Sxh4#
- 1...Qxg2
- 2.fxg4#
- 1...Sxf3
- 2.Se3#
- 1...gxf3
- 2.Se3#
- 2.g4#
- 1...Qd1
- 2.Se3#
- 1...Qe1
- 2.fxg4#
- 1...Qg1
- 2.fxg4#
- 1...Qh3
- 2.Se3#
- 1...Sf1
- 2.Bxe4#
- 2.fxe4#
- 2.fxg4#
- 1...Sc4
- 2.Bxe4#
- 2.fxe4#
- 2.fxg4#
- 1...Sxd3!
- threat
- 1.Qb2?
- threat
- 2.Rf6#
- 2.Qf6#
- 1...Qxh4+
- 2.Sxh4#
- 1...gxf3
- 2.Qf6#
- 1...Rc3
- 2.fxg4#
- 1...Rdd4
- 2.Se3#
- 2.fxg4#
- 1...Rd6
- 2.Se3#
- 2.Qe5#
- 2.fxg4#
- 1...Red4
- 2.Se3#
- 1...Re5
- 2.Rf6#
- 2.Qxe5#
- 1...Re6!
- threat
- 1.Qa1?
- threat
- 2.Rf6#
- 2.Qf6#
- 1...Qxh4+
- 2.Sxh4#
- 1...gxf3
- 2.Qf6#
- 1...Rc3
- 2.fxg4#
- 1...Rdd4
- 2.Se3#
- 2.fxg4#
- 1...Rd6
- 2.Se3#
- 2.Qe5#
- 2.fxg4#
- 1...Red4
- 2.Se3#
- 1...Re5
- 2.Rf6#
- 2.Qxe5#
- 1...Re6!
- threat
- 1.Qc3?
- threat
- 2.Rf6#
- 2.Qf6#
- 1...Qxh4+
- 2.Sxh4#
- 1...Rxc3
- 2.fxg4#
- 1...gxf3
- 2.Qf6#
- 1...Rdd4
- 2.Se3#
- 2.fxg4#
- 1...Rd6
- 2.Se3#
- 2.Qe5#
- 2.fxg4#
- 1...Red4
- 2.Se3#
- 1...Re5
- 2.Rf6#
- 2.Qxe5#
- 1...Re6!
- threat
- 1.Qxd3?
- threat
- 2.Se3#
- 2.Qb5#
- 2.Qd5#
- 2.fxg4#
- 1...Qxh4+
- 2.Sxh4#
- 1...Qxg2
- 2.Qb5#
- 2.Qd5#
- 2.fxg4#
- 1...Sxb1
- 2.Se3#
- 2.Qxe4#
- 2.fxe4#
- 2.fxg4#
- 1...Sxf3
- 2.Se3#
- 2.Qxe4#
- 1...gxf3
- 2.Se3#
- 2.Qb5#
- 2.Qd5#
- 2.g4#
- 1...Qd1
- 2.Se3#
- 2.Qb5#
- 2.Qd5#
- 1...Qe1
- 2.Qb5#
- 2.Qd5#
- 2.fxg4#
- 1...Qf1
- 2.Se3#
- 2.Qd5#
- 2.fxg4#
- 1...Qg1
- 2.Qd5#
- 2.fxg4#
- 1...Qh3
- 2.Se3#
- 2.Qb5#
- 2.Qd5#
- 1...Ba6
- 2.Se3#
- 2.Qd5#
- 2.Qd7#
- 2.fxg4#
- 1...Be6
- 2.Se3#
- 2.Rg5#
- 2.fxg4#
- 1...Scb3
- 2.Se3#
- 2.Qd5#
- 2.fxg4#
- 1...Sf1
- 2.Qxe4#
- 2.Qb5#
- 2.Qd5#
- 2.fxe4#
- 2.fxg4#
- 1...Sdb3
- 2.Se3#
- 2.Qxe4#
- 2.Qd5#
- 2.fxe4#
- 2.fxg4#
- 1...Sc4
- 2.Qxe4#
- 2.fxe4#
- 2.fxg4#
- 1...Sxd3!
- threat
- 1.Se3+?
- Keys
- 1.Sc2!
- threat
- 2.Qf8#
- 1...Qxh4+
- 2.Sxh4#
- 1...Rxa3
- 2.Sd4#
- 1...Rd6
- 2.Sce3#
- 1...Rd7
- 2.Sce3#
- 1...Rd8
- 2.Sce3#
- 1...Rb4
- 2.Sce3#
- 1...Re6
- 2.Sd4#
- 1...Re7
- 2.Sd4#
- 1...Re8
- 2.Sd4#
- 1...Be6
- 2.Rg5#
- threat
- 1.Sc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- R(d);P_SPINR(f),XQ(C)::P(D),XP(g)
- R(d);P_SPINR(f)::P(D),XP(g)
- R(f);N_GUARD,P_SPINR(d)::S(B),XR(f)
- R(f);N_GUARD,P_SPINR(d),XS(F)::S(B)
- R(f);N_GUARD,P_SPINR(d)::S(B)
- R(f);P_SPINR(d),SBLOCK::R1(I)
- B(i);SBLOCK::R1(I)
- Tries
- Try
- S(B);CHECK
- Vars
- R(d);P_SPINR(f),XS(B)::P(D),XP(g)
- Refutation
- R(f);P_SPINR(d),XS(B)
- Try
- S(F);XR(d)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- S(a);XS(F)::QAR(C)
- P(g);XP(D)::QAR(C)
- R(f);::R1(I)
- Refutation
- R(f);P_PINR(I)
- Try
- B(A);P_PINR(f),XR(d)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- Q(b);N_PINP(G),XS(B)::P(D),XP(g)
- S(c);XP(D)::S(B)
- Q(b);N_PINP(G)::S(B)
- Q(b);N_PINP(G)::P(D),XP(g)
- Q(b);::S(B)
- Refutation
- S(a);N_SPINR(f),XB(A)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- P(g);XP(D)::QAR1(C)
- R(d);P_SPINR(f)::P(D),XP(g)
- R(f);N_GUARD,P_SPINR(d)::S(B)
- Refutation
- R(f);P_PINR(I),P_SPINR(d)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- P(g);XP(D)::QAR1(C)
- R(d);P_SPINR(f)::P(D),XP(g)
- R(f);N_GUARD,P_SPINR(d)::S(B)
- Refutation
- R(f);P_PINR(I),P_SPINR(d)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- R(d);P_SPINR(f),XQ(C)::P(D),XP(g)
- P(g);XP(D)::QAR1(C)
- R(f);N_GUARD,P_SPINR(d)::S(B)
- Refutation
- R(f);P_PINR(I),P_SPINR(d)
- Try
- Q(C);P_PINR(f),XR(d)
- Threat
- DUALS(4)
- Vars
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- Refutation
- S(a);N_SPINR(f),XQ(C)
- Try
- Actual
- S(F);
- Threat
- QAR(C)
- Vars
- Q(b);CHECK,XP(G)::S(B),XQ(b)
- R(d);N_GUARD,S_CUTR(f),XQ(C)::S(F)
- R(d);N_GUARD,P_PINR(I),S_CUTR(f)::S(F)
- R(d);N_GUARD,S_CUTR(f)::S(F)
- R(f);N_GUARD,S_CUTR(d)::S(F)
- R(f);N_GUARD,P_PINR(I),S_CUTR(d)::S(F)
- B(i);SBLOCK::R1(I)
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).