MESON Chess Problem Database
Problem Display
PID: 139213 (6Q1/1p1KB3/4R3/1P1kp3/R2Nn2p/7q/2P1n2b/1b5B w - - 0 1)
Ellerman, Arnoldo
El Ajedrez Americano, 1936
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Rf6#
- 1...Qg2
- 2.Rg6#
- 1...Qxe6+
- 2.Qxe6#
- 1...Qa3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qb3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qc3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qd3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qe3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qf3
- 2.Rf6#
- 1...Qg3
- 2.Rg6#
- 1...Sxd4
- 2.c4#
- 1...exd4
- 2.Bxe4#
- 1...b6
- 2.Qa8#
- 1...Qf1
- Tries
- 1.Kc7?
- threat
- 2.Qd8#
- 1...Qc3+
- 2.Rc6#
- 1...Qxe6
- 2.Qxe6#
- 1...Sxd4
- 2.c4#
- 1...Qg2
- 2.Rg6#
- 1...Qa3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qf3
- 2.Rf6#
- 1...exd4+!
- threat
- 1.Sxe2?
- threat
- 2.Bxe4#
- 2.c4#
- 1...Qxe6+
- 2.Qxe6#
- 1...Qg4
- 2.Sc3#
- 2.c4#
- 1...Qg2
- 2.Rg6#
- 2.c4#
- 1...Qf5
- 2.Sc3#
- 2.c4#
- 1...Qb3
- 2.Bxe4#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qc3
- 2.Sxc3#
- 2.Bxe4#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qd3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qe3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.c4#
- 1...Qf3
- 2.Rf6#
- 2.c4#
- 1...Ba2
- 2.Bxe4#
- 1...Bxc2!
- threat
- 1.Sf5?
- threat
- 2.Bxe4#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.c4#
- 1...Bxc2
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qg4
- 2.Se3#
- 2.Rg6#
- 2.c4#
- 1...Qg2
- 2.Se3#
- 2.Rg6#
- 2.c4#
- 1...Qb3
- 2.Bxe4#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qc3
- 2.Bxe4#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qd3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qe3
- 2.Sxe3#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.c4#
- 1...Qf3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.c4#
- 1...Qg3
- 2.Bxe4#
- 2.Rg6#
- 2.c4#
- 1...Ba2
- 2.Bxe4#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Sc3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Sg3
- 2.Se3#
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.c4#
- 1...Sd4
- 2.c4#
- 1...Sf4
- 2.Bxe4#
- 2.c4#
- 1...b6
- 2.Bxe4#
- 2.Rxb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Qa8#
- 2.c4#
- 1...Qxf5!
- threat
- 1.Qb8?
- threat
- 2.Qd6#
- 2.Qxb7#
- 1...Sxd4
- 2.Qd6#
- 2.c4#
- 1...exd4
- 2.Bxe4#
- 2.Qxb7#
- 1...Qg2
- 2.Qxb7#
- 1...Qa3
- 2.Qxb7#
- 1...Qc3
- 2.Qd6#
- 1...Qf3
- 2.Qxb7#
- 1...b6
- 2.Qd6#
- 2.Qb7#
- 2.Qa8#
- 1...Qxe6+!
- threat
- 1.Qc8?
- threat
- 2.Qxb7#
- 2.Qc4#
- 2.Qc5#
- 1...Sxd4
- 2.Qc4#
- 2.Qc5#
- 2.c4#
- 1...Qg2
- 2.Qxb7#
- 2.Qc4#
- 1...Qa3
- 2.Qxb7#
- 2.Qc4#
- 1...Qb3
- 2.Rd6#
- 2.Qxb7#
- 2.Qc5#
- 1...Qc3
- 2.Rd6#
- 1...Qd3
- 2.Rd6#
- 2.Qxb7#
- 2.Qc5#
- 1...Qf3
- 2.Qxb7#
- 2.Qc4#
- 1...Ba2
- 2.Qxb7#
- 2.Qc5#
- 1...b6
- 2.Qb7#
- 2.Qc4#
- 2.Qc6#
- 2.Qa8#
- 1...Qxe6+!
- threat
- 1.Kc7?
- Keys
- 1.Kc8!
- threat
- 2.Qd8#
- 1...Qxe6+
- 2.Qxe6#
- 1...Qc3+
- 2.Rc6#
- 1...Sxd4
- 2.c4#
- 1...exd4
- 2.Bxe4#
- 1...Qg2
- 2.Rg6#
- 1...Qa3
- 2.Rea6#
- 2.Rb6#
- 2.Rc6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qf3
- 2.Rf6#
- threat
- 1.Kc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(d);N_PINR(F)::QAB(I)+R(F)
- Q(d);N_PINR(F),N_SPINS(e)::QAB(I)+R(F)
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(F)::QAB1(I),XQ(d)
- S(b);SBLOCK,XS(D)::P(B)
- P(h);XS(D)::B(A),XS(e)
- P(i);OGATEB::QAB(I)
- Tries
- Try
- K(G);N_SPINR(F),P-FLIGHT
- Threat
- QAR(I)
- Vars
- Q(d);CHECK,N_GUARD::QAB(I)+R(F)
- Q(d);OGATE,P_SPINQ(d),XR(F)::QAB1(I),XQ(d)
- S(b);SBLOCK,XS(D)::P(B)
- Q(d);N_GUARD,N_SPINS(e)::QAB(I)+R(F)
- Refutation
- P(h);CHECK,XS(D)
- Try
- S(D);XS(b)
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(F)::QAB1(I),XQ(d)
- B(a);::B(A),XS(e)
- Refutation
- B(a);XP(B)
- Try
- S(D);N_SPINR(F)
- Threat
- DUALS(8)
- Vars
- S(b);::P(B)
- Refutation
- Q(d);P_PINR(F),XS(D)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(d);N_PINR(F),N_SPINS(e)::QAB(I),XP(i)
- Q(d);N_PINR(F)::QAB(I),XP(i)
- Q(d);N_PINR(F)::QAR1(I)
- Refutation
- Q(d);CHECK,XR(F)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- Q(d);N_PINR(F)::R1(F)
- Refutation
- Q(d);CHECK,XR(F)
- Try
- Actual
- K(G);S_FLIGHT
- Threat
- QAR(I)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(F)::QAB1(I),XQ(d)
- Q(d);CHECK,N_PINR(F)::QAB(I)+R(F)
- S(b);SBLOCK,XS(D)::P(B)
- P(h);XS(D)::B(A),XS(e)
- Q(d);N_PINR(F),N_SPINS(e)::QAB(I)+R(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).