MESON Chess Problem Database
Problem Display
PID: 110701 (8/6p1/1N2p1K1/4B3/1b6/3k4/1Q2R3/1b6 w - - 0 1)
Jakab, Arpad
4th HM., Hungarian National Ty., 1924
#2
5 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Be1
- 2.Qb5#
- 1...Bd2
- 2.Qxd2#
- 1...Ba3
- 2.Qd2#
- 2.Qb5#
- 1...Bc3
- 2.Qb5#
- 1...Ba5
- 2.Qb5#
- 1...Bc5
- 2.Qd2#
- 2.Qb5#
- 1...Bd6
- 2.Qd2#
- 2.Qb5#
- 1...Be7
- 2.Qd2#
- 2.Qb5#
- 1...Bf8
- 2.Qd2#
- 2.Qb5#
- 1...Ba2
- Tries
- 1.Kxg7?
- 1...Bc2
- 2.Qxc2#
- 1...Bd2
- 2.Qxd2#
- 1...Ba2
- 2.Qc2#
- 1...Be1
- 2.Qb5#
- 1...Ba3
- 2.Qd2#
- 2.Qb5#
- 1...Bc3
- 2.Qb5#
- 1...Ba5
- 2.Qb5#
- 1...Bc5
- 2.Qd2#
- 2.Qb5#
- 1...Bd6
- 2.Qd2#
- 2.Qb5#
- 1...Be7
- 2.Qd2#
- 2.Qb5#
- 1...Bf8+!
- 1...Bc2
- 1.Bc3?
- threat
- 2.Qd2#
- 1...Bc2
- 2.Qxc2#
- 1...Bxc3!
- threat
- 1.Bxg7?
- 1...Bc2
- 2.Qxc2#
- 1...Bd2
- 2.Qxd2#
- 1...Ba2
- 2.Qc2#
- 1...Be1
- 2.Qb5#
- 1...Ba3
- 2.Qd2#
- 2.Qb5#
- 1...Bc3
- 2.Qb5#
- 1...Ba5
- 2.Qb5#
- 1...Bc5
- 2.Qd2#
- 2.Qb5#
- 1...Bd6
- 2.Qd2#
- 2.Qb5#
- 1...Be7
- 2.Qd2#
- 2.Qb5#
- 1...Bf8
- 2.Qd2#
- 2.Qb5#
- 1...e5!
- 1...Bc2
- 1.Re1?
- threat
- 2.Qe2#
- 1...Bc2
- 2.Qd4#
- 1...Bd2
- 2.Qxb1#
- 1...Bxe1!
- threat
- 1.Qc1?
- threat
- 2.Re3#
- 2.Qe3#
- 2.Qc4#
- 1...Ba2
- 2.Re3#
- 2.Qe3#
- 2.Qc2#
- 1...Bc2
- 2.Re3#
- 2.Qe3#
- 2.Qxc2#
- 1...Bd2
- 2.Qxd2#
- 2.Qc4#
- 1...Bc3
- 2.Re3#
- 2.Qe3#
- 1...Bc5
- 2.Qd2#
- 2.Qd1#
- 2.Qc4#
- 1...Kxe2+!
- threat
- 1.Qa2?
- threat
- 2.Qc4#
- 2.Qa6#
- 1...Bd2
- 2.Qc4#
- 2.Qxd2#
- 1...Ba3
- 2.Qc4#
- 2.Qd2#
- 1...Ba5
- 2.Qc4#
- 1...Bxa2!
- threat
- 1.Qb3+?
- 1...Bc3
- 2.Qc4#
- 2.Qb5#
- 1...Kxe2+!
- 1...Bc3
- 1.Qxb4?
- threat
- 2.Qd2#
- 2.Qc4#
- 2.Qe4#
- 2.Qb5#
- 1...Ba2
- 2.Qd2#
- 2.Qe4#
- 1...Kxe2+!
- threat
- 1.Kxg7?
- Keys
- 1.Re4!
- threat
- 2.Qe2#
- 1...Kxe4
- 2.Qe2#
- 1...Bc2
- 2.Qd4#
- 1...Bd2
- 2.Qxb1#
- threat
- 1.Re4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- B(a);N_GUARD::QAB1(A)
- B(a);N_GUARD::QAB1(A),XB(a)
- B(c);OGATE::QAB(A)
- B(c);N_GUARD::QAR1(A),XB(c)
- Tries
- Try
- K(E);P-FLIGHT,XP(e)
- Vars
- B(a);N_GUARD::QAB1(A),XB(a)
- B(c);N_GUARD::QAR1(A),XB(c)
- B(a);N_GUARD::QAB1(A)
- B(c);OGATE::QAB(A)
- B(c);OGATE,P_PINB(C)::QAB(A)
- Refutation
- B(c);CHECK
- Try
- B(C);
- Threat
- QAR1(A)
- Vars
- B(a);N_GUARD::QAB1(A),XB(a)
- Refutation
- B(c);XB(C)
- Try
- B(C);XP(e)
- Vars
- B(a);N_GUARD::QAB1(A),XB(a)
- B(c);N_GUARD::QAR1(A),XB(c)
- B(a);N_GUARD::QAB1(A)
- B(c);OGATE::QAB(A)
- Refutation
- P(d);
- Try
- R(B);
- Threat
- QAB1(A)
- Vars
- B(a);SBLOCK::QAR1(A)
- B(c);SBLOCK::QAB(A),XB(a)
- Refutation
- B(c);XR(B)
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- K(b);CHECK,S_FLIGHT,XR(B)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);::QAB1(A)
- Refutation
- B(a);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- K(b);CHECK,S_FLIGHT,XR(B)
- Try
- Q(A);XB(c)
- Threat
- DUALS(4)
- Refutation
- K(b);CHECK,S_FLIGHT,XR(B)
- Try
- Actual
- R(B);
- Threat
- QAB1(A)
- Vars
- K(b);S_FLIGHT,XR(B)::QAR2(A)
- B(a);SBLOCK::QAR1(A)
- B(c);SBLOCK::QAB(A),XB(a)
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).