MESON Chess Problem Database
Problem Display
PID: 192590 (2Nr4/7B/n7/qQ2pP2/4k1b1/3RP1K1/1b3B2/5N2 w - - 0 1)
Coello Alonso, Jose Antonio
BCPS Website, 2019
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Sxd2#
- 1...Qb6
- 2.Sd2#
- 1...Qc7
- 2.Sd2#
- 1...Qa1
- 2.Sd2#
- 1...Qa2
- 2.Sd2#
- 1...Qa3
- 2.Sd2#
- 1...Qa4
- 2.Sd2#
- 1...Rd6
- 2.Sxd6#
- 1...Re8
- 2.Sd6#
- 1...Rf8
- 2.Sd6#
- 1...Rg8
- 2.Sd6#
- 1...Rh8
- 2.Sd6#
- 1...Bd1
- 2.f6#
- 1...Be2
- 2.f6#
- 1...Bf3
- 2.f6#
- 1...Sb4
- 2.Sd2#
- 1...Qd2
- Tries
- 1.Kxg4?
- threat
- 2.Sg3#
- 2.f6#
- 1...Qxb5
- 2.f6#
- 1...Qc7
- 2.Sd2#
- 2.Sg3#
- 1...Rd7
- 2.Sg3#
- 1...Rh8
- 2.Sg3#
- 2.Sd6#
- 1...Rg8+!
- threat
- 1.Rd7?
- threat
- 2.Sd6#
- 2.Qd3#
- 1...Qxb5
- 2.Sd2#
- 1...Rxc8
- 2.Qd3#
- 1...Qd2
- 2.Sxd2#
- 1...Qc3
- 2.Sd6#
- 2.Qd5#
- 1...Qb4
- 2.Qd3#
- 2.Qc6#
- 2.Qd5#
- 1...Qb6
- 2.Sd2#
- 2.Qd3#
- 2.Qd5#
- 1...Qc7
- 2.Sd2#
- 2.Qd3#
- 2.Qd5#
- 1...Qa3
- 2.Sd2#
- 2.Qc6#
- 2.Qd5#
- 2.Qb7#
- 1...Ba3
- 2.Qd3#
- 2.Qc4#
- 2.Qb1#
- 1...Bd4
- 2.Sd6#
- 2.Qb1#
- 1...Be2
- 2.Sd6#
- 2.f6#
- 1...Sb4
- 2.Sd2#
- 2.Sd6#
- 1...Sc5
- 2.Qc6#
- 1...Rxd7!
- threat
- 1.Rxd8?
- threat
- 2.Sd6#
- 2.Qd3#
- 1...Qxb5
- 2.Sd2#
- 1...Qd2
- 2.Sxd2#
- 1...Qc3
- 2.Sd6#
- 2.Qd5#
- 1...Qb4
- 2.Qd3#
- 2.Qc6#
- 2.Qd5#
- 1...Qb6
- 2.Sd2#
- 2.Qd3#
- 2.Qd5#
- 1...Qc7
- 2.Sd2#
- 2.Qd3#
- 2.Qd5#
- 1...Qa3
- 2.Sd2#
- 2.Qc6#
- 2.Qd5#
- 2.Qb7#
- 1...Ba3
- 2.Qd3#
- 2.Qc4#
- 2.Qb1#
- 1...Bd4
- 2.Sd6#
- 2.Qb1#
- 1...Be2
- 2.Sd6#
- 2.f6#
- 1...Sb4
- 2.Sd2#
- 2.Sd6#
- 1...Sc5
- 2.Qc6#
- 1...Qxd8!
- threat
- 1.Qc4+?
- 1...Rd4
- 2.Sd6#
- 1...Bd4!
- 1...Rd4
- 1.Kxg4?
- Keys
- 1.Rd6!
- threat
- 2.Qd3#
- 1...Qxb5
- 2.Sd2#
- 1...Rxd6
- 2.Sxd6#
- 1...Qd2
- 2.Sxd2#
- 1...Qc3
- 2.Qd5#
- 1...Qa3
- 2.Sd2#
- 2.Qc6#
- 2.Qd5#
- 2.Qb7#
- 1...Bd4
- 2.Qb1#
- 1...Be2
- 2.f6#
- 1...Sb4
- 2.Sd2#
- 1...Sc5
- 2.Qc6#
- threat
- 1.Rd6!
This is a version of 139052
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- Q(d);N_GUARD::S(A),XQ(d)
- Q(d);N_GUARD::S(A)
- R(g);N_GUARD::S(I),XR(g)
- R(g);N_GUARD::S(I)
- B(c);N_GUARD::B(H)+P(G)
- S(f);S_CUTQ(d)::S(A)
- Tries
- Try
- K(E);P-FLIGHT,XB(c)
- Threat
- DUALS(2)
- Vars
- Q(d);XQ(F)::B(H)+P(G)
- R(g);::S(A)
- Refutation
- R(g);CHECK
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XQ(F)::S(A)
- R(g);XS(I)::QAB1(F)
- Q(d);N_GUARD::S(A),XQ(d)
- S(f);S_CUTQ(d)::QAB(F)
- Refutation
- R(g);XR(C)
- Try
- R(C);XR(g)
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XQ(F)::S(A)
- Q(d);N_GUARD::S(A),XQ(d)
- S(f);S_CUTQ(d)::QAB(F)
- Refutation
- Q(d);XR(C)
- Try
- Q(F);CHECK
- Vars
- R(g);P_SPINR(g)::S(I)
- Refutation
- B(a);P_SPINB(a)
- Try
- Actual
- R(C);
- Threat
- QAB1(F)
- Vars
- Q(d);N_GUARD,XQ(F)::S(A)
- R(g);XR(C)::S(I),XR(g)
- Q(d);N_GUARD::S(A),XQ(d)
- Q(d);N_GUARD,P_PINP(D)::QAB1(F)
- B(a);OGATE::QAB(F)
- B(c);N_GUARD::B(H)+P(G)
- S(f);S_CUTQ(d)::S(A)
- S(f);S_CUTQ(d)::QAB(F)
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).