MESON Chess Problem Database
Problem Display
PID: 206749 (8/3pN3/1Ppk1P2/R1n2P2/2r4p/2P1Q1pP/6K1/8 w - - 0 1)
Ballo, Gyorgy
Nepszava, 1925
#2
9 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxc3
- 2.Qd4#
- 2.Qf4#
- 1...Ra4
- 2.Qxc5#
- 1...Rb4
- 2.Qxc5#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Qxc5#
- 1...Rf4
- 2.Qxf4#
- 2.Qxc5#
- 1...Rg4
- 2.Qxc5#
- 1...Sb3
- 2.Sc8#
- 2.Qe5#
- 1...Sd3
- 2.Sc8#
- 1...Sa4
- 2.Sc8#
- 2.Qe5#
- 1...Se4
- 2.Sc8#
- 2.Qf4#
- 1...Sa6
- 2.Sc8#
- 2.Qe5#
- 1...Se6
- 2.Sc8#
- 2.Qe5#
- 1...Sb7
- 2.Sc8#
- 2.Qe5#
- 1...Rxc3
- Tries
- 1.Kf1?
- 1...Rf4+
- 2.Qxf4#
- 1...Rxc3
- 2.Qd4#
- 2.Qf4#
- 1...Re4
- 2.Qxc5#
- 1...Ra4
- 2.Qxc5#
- 1...Rb4
- 2.Qxc5#
- 1...Rd4
- 2.Qxd4#
- 1...Rg4
- 2.Qxc5#
- 1...Sb3
- 2.Sc8#
- 2.Qe5#
- 1...Sd3
- 2.Sc8#
- 1...Sa4
- 2.Sc8#
- 2.Qe5#
- 1...Se4
- 2.Sc8#
- 2.Qf4#
- 1...Sa6
- 2.Sc8#
- 2.Qe5#
- 1...Se6
- 2.Sc8#
- 2.Qe5#
- 1...Sb7
- 2.Sc8#
- 2.Qe5#
- 1...g2+!
- 1...Rf4+
- 1.Kg1?
- 1...Rxc3
- 2.Qd4#
- 2.Qf4#
- 1...Re4
- 2.Qxc5#
- 1...Ra4
- 2.Qxc5#
- 1...Rb4
- 2.Qxc5#
- 1...Rd4
- 2.Qxd4#
- 1...Rf4
- 2.Qxf4#
- 2.Qxc5#
- 1...Rg4
- 2.Qxc5#
- 1...Sb3
- 2.Sc8#
- 2.Qe5#
- 1...Sd3
- 2.Sc8#
- 1...Sa4
- 2.Sc8#
- 2.Qe5#
- 1...Se4
- 2.Sc8#
- 2.Qf4#
- 1...Sa6
- 2.Sc8#
- 2.Qe5#
- 1...Se6
- 2.Sc8#
- 2.Qe5#
- 1...Sb7
- 2.Sc8#
- 2.Qe5#
- 1...g2!
- 1...Rxc3
- 1.Kh1?
- 1...Rxc3
- 2.Qd4#
- 2.Qf4#
- 1...Re4
- 2.Qxc5#
- 1...Ra4
- 2.Qxc5#
- 1...Rb4
- 2.Qxc5#
- 1...Rd4
- 2.Qxd4#
- 1...Rf4
- 2.Qxf4#
- 2.Qxc5#
- 1...Rg4
- 2.Qxc5#
- 1...Sb3
- 2.Sc8#
- 2.Qe5#
- 1...Sd3
- 2.Sc8#
- 1...Sa4
- 2.Sc8#
- 2.Qe5#
- 1...Se4
- 2.Sc8#
- 2.Qf4#
- 1...Sa6
- 2.Sc8#
- 2.Qe5#
- 1...Se6
- 2.Sc8#
- 2.Qe5#
- 1...Sb7
- 2.Sc8#
- 2.Qe5#
- 1...g2+!
- 1...Rxc3
- 1.Sg8?
- 1...Rxc3
- 2.Qd4#
- 1...Re4
- 2.Qxc5#
- 1...Ra4
- 2.Qxc5#
- 1...Rb4
- 2.Qxc5#
- 1...Rd4
- 2.Qxd4#
- 1...Rf4
- 2.Qxc5#
- 1...Rg4
- 2.Qxc5#
- 1...Sb3
- 2.Qe5#
- 2.Qe7#
- 1...Sd3
- 2.Qe7#
- 1...Sa4
- 2.Qe5#
- 2.Qe7#
- 1...Se4
- 2.Qf4#
- 1...Sa6
- 2.Qe5#
- 2.Qe7#
- 1...Se6
- 2.Qe5#
- 1...Sb7
- 2.Qe5#
- 2.Qe7#
- 1...Kd5!
- 1...Rxc3
- 1.Rb5?
- 1...Rxc3
- 2.Qd4#
- 2.Qf4#
- 1...Re4
- 2.Qxc5#
- 1...Ra4
- 2.Qxc5#
- 1...Rb4
- 2.Qxc5#
- 1...Rd4
- 2.Qxd4#
- 1...Rf4
- 2.Qxf4#
- 2.Qxc5#
- 1...Rg4
- 2.Qxc5#
- 1...Sb3
- 2.Sc8#
- 2.Qe5#
- 1...Sd3
- 2.Sc8#
- 1...Sa4
- 2.Sc8#
- 2.Qe5#
- 1...Se4
- 2.Sc8#
- 2.Qf4#
- 1...Sa6
- 2.Sc8#
- 2.Qe5#
- 1...Se6
- 2.Sc8#
- 2.Qe5#
- 1...Sb7
- 2.Sc8#
- 2.Qe5#
- 1...cxb5!
- 1...Rxc3
- 1.Rxc5?
- threat
- 2.Sc8#
- 2.Qe5#
- 1...Rd4
- 2.Qxd4#
- 2.Qe5#
- 1...Re4
- 2.Sc8#
- 1...Rxc5!
- threat
- 1.Qg1?
- 1...Rxc3
- 2.Qd4#
- 1...Ra4
- 2.Qxc5#
- 1...Rb4
- 2.Qxc5#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rg4
- 2.Qxc5#
- 1...Sb3
- 2.Sc8#
- 1...Sd3
- 2.Sc8#
- 1...Sa4
- 2.Sc8#
- 1...Se4
- 2.Sc8#
- 1...Sa6
- 2.Sc8#
- 1...Se6
- 2.Sc8#
- 1...Sb7
- 2.Sc8#
- 1...Ke5!
- 1...Rxc3
- 1.Qd2+?
- 1...Rd4
- 2.Qxd4#
- 1...Sd3
- 2.Sc8#
- 1...Ke5!
- 1...Rd4
- 1.Qd3+?
- 1...Rd4
- 2.Qxd4#
- 1...Sxd3
- 2.Sc8#
- 1...Ke5!
- 1...Rd4
- 1.Qxg3+?
- 1...Rf4
- 2.Qxf4#
- 1...hxg3!
- 1...Rf4
- 1.Qe6+?
- 1...Sxe6
- 2.Sc8#
- 1...dxe6!
- 1...Sxe6
- 1.Kf1?
- Keys
- 1.Sg6!
- threat
- 2.Qe5#
- 1...Kd5
- 2.Qe5#
- 1...Re4
- 2.Qxc5#
- 1...Sd3
- 2.Qe7#
- 1...Se4
- 2.Qf4#
- threat
- 1.Sg6!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::QAB1(C),XS(d)
- R(b);N_GUARD::QAR2(C),XR(b)
- S(d);::S(I)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(b);CHECK,N_GUARD::QAB(C),XR(b)
- R(b);N_GUARD::QAB1(C),XS(d)
- R(b);N_GUARD::QAR2(C),XR(b)
- S(d);::S(I)
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(b);N_GUARD::QAB1(C),XS(d)
- R(b);N_GUARD::QAR2(C),XR(b)
- S(d);::S(I)
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- R(b);N_GUARD::QAB1(C),XS(d)
- R(b);N_GUARD::QAR2(C),XR(b)
- S(d);::S(I)
- Refutation
- P(a);CHECK
- Try
- S(I);
- Vars
- R(b);N_GUARD,XP(B)::QAR2(C)
- R(b);N_GUARD::QAB1(C),XS(d)
- R(b);N_GUARD::QAR2(C),XR(b)
- S(d);::QAB1(C)
- S(d);S_CUTR(b)::QAB(C)
- Refutation
- K(f);P-FLIGHT,P_SPINS(d)
- Try
- R(E);
- Vars
- R(b);N_GUARD::QAB1(C),XS(d)
- R(b);N_GUARD::QAR2(C),XR(b)
- S(d);::S(I)
- Refutation
- P(e);XR(E)
- Try
- R(E);XS(d)
- Threat
- DUALS(2)
- Vars
- R(b);::S(I)
- Refutation
- R(b);XR(E)
- Try
- Q(C);
- Vars
- R(b);N_GUARD,XP(B)::QAR2(C)
- R(b);N_GUARD::QAB1(C),XS(d)
- R(b);N_GUARD::QAR2(C),XR(b)
- S(d);::S(I)
- Refutation
- K(f);P_SPINS(d),S_FLIGHT
- Try
- Q(C);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAR2(C),XR(b)
- S(d);P_SPINS(d)::S(I)
- Refutation
- K(f);P_SPINS(d),S_FLIGHT
- Try
- Q(C);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAR2(C),XR(b)
- S(d);XQ(C)::S(I)
- Refutation
- K(f);P_SPINS(d),S_FLIGHT
- Try
- Q(C);CHECK,XP(a)
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAB(C),XR(b)
- Refutation
- P(c);XQ(C)
- Try
- Q(C);CHECK
- Vars
- S(d);XQ(C)::S(I)
- Refutation
- P(g);XQ(C)
- Try
- Actual
- S(I);
- Threat
- QAB1(C)
- Vars
- K(f);P-FLIGHT,P_SPINS(d)::QAR1(C)
- R(b);N_GUARD::QAB1(C),XS(d)
- S(d);::QAB1(C)
- S(d);S_CUTR(b)::QAB(C)
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).