MESON Chess Problem Database
Problem Display
PID: 96546 (B3b2K/4R3/2R5/3k4/2q3n1/2P5/8/3Nn1Q1 w - - 0 1)
Marcos, EM
Problemas, 1967
#2
7 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qd4#
- 2.Qc5#
- 1...Qa2
- 2.Qd4#
- 2.Qc5#
- 1...Qe2
- 2.Qd4#
- 2.Qc5#
- 1...Qb3
- 2.Qd4#
- 2.Qc5#
- 1...Qd3
- 2.Qc5#
- 1...Qb5
- 2.Qd4#
- 1...Qa6
- 2.Qd4#
- 2.Qc5#
- 1...Qxc3+
- 2.Sxc3#
- 1...Qa4
- 2.Qc5#
- 1...Qd4+
- 2.Qxd4#
- 1...Qe4
- 2.Qc5#
- 1...Qf4
- 2.Qc5#
- 1...Qc5
- 2.Qxc5#
- 1...Qxc6
- 2.Qd4#
- 1...Sf2
- 2.Se3#
- 2.Qg5#
- 1...Sh2
- 2.Se3#
- 2.Qg5#
- 1...Se3
- 2.Sxe3#
- 1...Sf6
- 2.Se3#
- 2.Qg5#
- 1...Sh6
- 2.Se3#
- 1...Qf1
- Tries
- 1.Rxc4+?
- 1...Kd6
- 2.Qc5#
- 1...Bc6
- 2.Qd4#
- 2.Qc5#
- 1...Kxc4!
- 1...Kd6
- 1.Ra6+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6!
- 1...Qc6
- 1.Rb6+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6!
- 1...Qc6
- 1.Rce6+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6!
- 1...Qc6
- 1.Rf6+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6!
- 1...Qc6
- 1.Rg6+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6!
- 1...Qc6
- 1.Rh6+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6!
- 1...Qc6
- 1.Rcc7+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6
- 2.Rcd7#
- 1...Kd6!
- 1...Qc6
- 1.Rc8+?
- 1...Qc6
- 2.Qd4#
- 1...Bc6
- 2.Rd8#
- 1...Kd6!
- 1...Qc6
- 1.Qb6?
- threat
- 2.Rc5#
- 2.Rd6#
- 1...Qxc3+
- 2.Sxc3#
- 1...Qd4+
- 2.Qxd4#
- 1...Qxc6
- 2.Qd4#
- 1...Qc5
- 2.Rxc5#
- 2.Qxc5#
- 1...Qf1
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Qa2
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 2.Qb5#
- 1...Qe2
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Qb3
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 2.Qxb3#
- 1...Qd3
- 2.Rc5#
- 2.Qc5#
- 1...Qb5
- 2.Rc5#
- 2.Qd4#
- 2.Qxb5#
- 1...Qa6
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Qa4
- 2.Rc5#
- 2.Qc5#
- 1...Qb4
- 2.Rc5#
- 1...Qe4
- 2.Rc5#
- 2.Qa5#
- 2.Qc5#
- 2.Qb5#
- 1...Qf4
- 2.Rc5#
- 2.Qa5#
- 2.Qc5#
- 2.Qb5#
- 1...Bxc6!
- threat
- 1.Qxg4?
- threat
- 2.Se3#
- 2.Qf5#
- 2.Qe6#
- 2.Qxc4#
- 2.Qg5#
- 1...Qxc3+
- 2.Sxc3#
- 1...Qd4+
- 2.Qxd4#
- 1...Qxg4
- 2.Se3#
- 1...Qxc6
- 2.Qd4#
- 1...Qf1
- 2.Se3#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Qa2
- 2.Se3#
- 2.Qf5#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 2.Qg5#
- 1...Qe2
- 2.Qd4#
- 1...Qb3
- 2.Se3#
- 2.Qf5#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 2.Qg5#
- 1...Qd3
- 2.Qe6#
- 1...Qb5
- 2.Se3#
- 2.Qf5#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 2.Qg5#
- 1...Qa6
- 2.Se3#
- 2.Qf5#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 2.Qg5#
- 1...Qa4
- 2.Se3#
- 2.Qf5#
- 2.Qe6#
- 2.Qg5#
- 1...Qb4
- 2.Se3#
- 2.Qf5#
- 2.Qe6#
- 2.Qg5#
- 1...Qe4
- 2.Qxe4#
- 1...Qf4
- 2.Qe6#
- 1...Qc5
- 2.Qe6#
- 2.Qe4#
- 1...Bg6
- 2.Se3#
- 2.Qe6#
- 2.Qd7#
- 2.Qxc4#
- 1...Bd7
- 2.Se3#
- 2.Qxd7#
- 2.Qxc4#
- 1...Bf7
- 2.Se3#
- 2.Qf5#
- 2.Qd7#
- 2.Qxc4#
- 2.Qg5#
- 1...Sc2
- 2.Qf5#
- 2.Qe6#
- 2.Qxc4#
- 2.Qg5#
- 1...Sg2
- 2.Qf5#
- 2.Qe6#
- 2.Qxc4#
- 2.Qg5#
- 1...Sd3
- 2.Se3#
- 2.Qe6#
- 2.Qxc4#
- 1...Sf3
- 2.Se3#
- 2.Qe6#
- 2.Qxc4#
- 1...Bxc6!
- threat
- 1.Rxc4+?
- Keys
- 1.Qe3!
- threat
- 2.Qe6#
- 1...Qxc3+
- 2.Sxc3#
- 1...Qd4+
- 2.Qxd4#
- 1...Qxc6
- 2.Qd4#
- 1...Bxc6
- 2.Rd7#
- 1...Sxe3
- 2.Sxe3#
- 1...Qe2
- 2.Qd4#
- 2.Qc5#
- 1...Qe4
- 2.Qc5#
- 2.Qxe4#
- 1...Bd7
- 2.Rxd7#
- 1...Bf7
- 2.Rd7#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- threat
- 1.Qe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD::QAR1(B)
- Q(b);CHECK,XP(C)::S(A),XQ(b)
- Q(b);CHECK,N_GUARD::QAR1(B),XQ(b)
- Q(b);N_GUARD::QAR1(B),XQ(b)
- Q(b);N_GUARD,P_SPINQ(b),XR(D)::QAR1(B)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD::S(A)
- Tries
- Try
- R(D);CHECK,XQ(b)
- Vars
- K(d);P-FLIGHT::QAB1(B)
- Refutation
- K(d);S_FLIGHT,XR(D)
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- Refutation
- B(e);P_SPINB(e)
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- B(e);P_SPINB(e)::R(D)
- Refutation
- K(d);P-FLIGHT
- Try
- R(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAR1(B)
- B(e);P_SPINB(e)::R(D)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XP(C)::S(A),XQ(b)
- Q(b);CHECK,N_GUARD::QAR1(B),XQ(b)
- Q(b);N_GUARD,P_SPINQ(b),XR(D)::QAR1(B)
- Q(b);::B(F)+R(D),DCHECK
- Refutation
- B(e);P_SPINB(e),XR(D)
- Try
- Q(B);XS(c)
- Threat
- DUALS(5)
- Vars
- Q(b);CHECK,XP(C)::S(A),XQ(b)
- Q(b);CHECK,N_GUARD::QAR1(B),XQ(b)
- Q(b);XQ(B)::S(A)
- Q(b);N_GUARD,P_SPINQ(b),XR(D)::QAR1(B)
- Q(b);N_GUARD::QAR1(B)
- Q(b);::QAB1(B)
- Q(b);N_GUARD::QAB1(B),XQ(b)
- Refutation
- B(e);P_SPINB(e),XR(D)
- Try
- Actual
- Q(B);
- Threat
- QAB1(B)
- Vars
- Q(b);CHECK,XP(C)::S(A),XQ(b)
- Q(b);CHECK,N_GUARD::QAR1(B),XQ(b)
- Q(b);N_GUARD,P_SPINQ(b),XR(D)::QAR1(B)
- B(e);N_GUARD,P_SPINB(e),XR(D)::R(E)
- S(c);XQ(B)::S(A),XS(c)
- B(e);N_GUARD::R(E),XB(e)
- B(e);N_GUARD::R(E)
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).