MESON Chess Problem Database
Problem Display
PID: 138606 (4RB2/prpp4/1br3p1/p2p4/3kBN2/NQ3p2/1KP1b1q1/5n2 w - - 0 1)
Ellerman, Arnoldo
El Ajedrez Americano, 1934
#2
8 + 14
SOLUTION
- SOUND
- Sets
- 1...Rxc2+
- 2.Sxc2#
- 1...Rc3
- 2.Qxc3#
- 1...Rc4
- 2.Sb5#
- 1...Rc5
- 2.Bg7#
- 1...Rd6
- 2.Qc3#
- 1...Rf6
- 2.Qc3#
- 1...Bd1
- 2.Sb5#
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bc4
- 2.Qc3#
- 1...Bb5
- 2.Sxb5#
- 1...f2
- 2.Sxe2#
- 1...Rxc2+
- Tries
- 1.Sxe2+?
- 1...fxe2
- 2.Sb5#
- 2.Qd3#
- 1...Qxe2!
- 1...fxe2
- 1.Bd3?
- threat
- 2.Sb5#
- 2.Qxd5#
- 1...Rxc2+
- 2.Sxc2#
- 1...Bxd3
- 2.Qxd5#
- 2.Qxd3#
- 1...Rd6
- 2.Qc3#
- 1...d6
- 2.Qxd5#
- 1...Qg5
- 2.Sb5#
- 1...Rc4
- 2.Sb5#
- 1...Rc5
- 2.Bg7#
- 1...Bc5
- 2.c3#
- 1...Se3
- 2.Sb5#
- 1...f2
- 2.Sb5#
- 2.Sxe2#
- 1...a6
- 2.Qxd5#
- 1...Re6!
- threat
- 1.Bxf3?
- threat
- 2.Qxd5#
- 1...Rxc2+
- 2.Sxc2#
- 1...Bxf3
- 2.Sb5#
- 2.Qd3#
- 1...Rd6
- 2.Qc3#
- 1...Re6
- 2.Qc3#
- 1...Qg5
- 2.Sxe2#
- 1...Rc4
- 2.Sb5#
- 1...Rc5
- 2.Bg7#
- 1...Bc4
- 2.Qc3#
- 1...Bc5
- 2.c3#
- 1...Se3
- 2.Qxe3#
- 1...Qxf3!
- threat
- 1.Bxd5?
- threat
- 2.Re4#
- 1...Rxc2+
- 2.Sxc2#
- 1...Rd6
- 2.Qc3#
- 1...Re6
- 2.Qc3#
- 1...Bd3
- 2.Qxd3#
- 1...Sd2
- 2.Qe3#
- 1...Sg3
- 2.Qe3#
- 1...f2
- 2.Sxe2#
- 1...d6!
- threat
- 1.Bxg6?
- threat
- 2.Qxd5#
- 1...Rxc2+
- 2.Sxc2#
- 1...Rd6
- 2.Qc3#
- 1...Re6
- 2.Qc3#
- 1...Rc4
- 2.Sb5#
- 1...Rc5
- 2.Bg7#
- 1...Bc4
- 2.Qc3#
- 1...Bc5
- 2.c3#
- 1...Se3
- 2.Qxe3#
- 1...f2
- 2.Sxe2#
- 1...Qg5!
- threat
- 1.Bg7+?
- 1...Rf6
- 2.Qc3#
- 1...Kc5!
- 1...Rf6
- 1.c3+?
- 1...Rxc3
- 2.Qxc3#
- 1...Ke3!
- 1...Rxc3
- 1.Sxe2+?
- Keys
- 1.Bf5!
- threat
- 2.Qxd5#
- 1...Rxc2+
- 2.Sxc2#
- 1...Rd6
- 2.Qc3#
- 1...Re6
- 2.Qc3#
- 1...Rc4
- 2.Sb5#
- 1...Rc5
- 2.Bg7#
- 1...Bc4
- 2.Qc3#
- 1...Bc5
- 2.c3#
- 1...Se3
- 2.Qxe3#
- 1...f2
- 2.Sxe2#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- R(i);CHECK,XP(B)::S(C),XR(i)
- R(i);N_GUARD::QAB1(D),XR(i)
- R(i);S_CUTB(b)::S(C)
- R(i);N_GUARD,SBLOCK::B(H)
- R(i);N_GUARD::QAB1(D)
- B(b);N_GUARD,P_PINP(B)::QAR1(D),XB(b)
- B(b);P_PINP(B),S_CUTR(i)::QAB1(D)
- B(b);N_GUARD,P_PINP(B)::S(C),XB(b)
- P(d);N_GUARD,S_CUTQ(c)::S(F),XB(b)
- Tries
- Try
- S(F);CHECK,XB(b)
- Refutation
- Q(c);P_PINP(B),XS(F)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(i);CHECK,XP(B)::S(C),XR(i)
- R(i);N_GUARD::QAB1(D)
- P(n);::QAR1(D),XP(g)
- Q(c);::S(C)
- R(i);::S(C)
- R(i);N_GUARD,SBLOCK::B(H)
- B(h);P_PINQ(D),S_CUTR(i)::P(B)
- S(a);::S(C)
- P(k);::QAR1(D),XP(g)
- Refutation
- R(i);
- Try
- B(E);XP(d)
- Threat
- QAR1(D),XP(g)
- Vars
- R(i);CHECK,XP(B)::S(C),XR(i)
- R(i);N_GUARD::QAB1(D)
- Q(c);N_GUARD::S(F),XB(b)
- R(i);S_CUTB(b)::S(C)
- R(i);N_GUARD,SBLOCK::B(H)
- B(b);P_PINP(B),S_CUTR(i)::QAB1(D)
- B(h);P_PINQ(D),S_CUTR(i)::P(B)
- S(a);N_GUARD::QAB1(D),XS(a)
- Refutation
- Q(c);XB(E)
- Try
- B(E);XP(g)
- Threat
- R1(G)
- Vars
- R(i);CHECK,XP(B)::S(C),XR(i)
- R(i);N_GUARD::QAB1(D)
- B(b);N_GUARD,P_PINP(B)::QAR1(D),XB(b)
- S(a);N_GUARD::QAB1(D)
- P(d);N_GUARD,S_CUTQ(c)::S(F),XB(b)
- Refutation
- P(n);
- Try
- B(E);XP(j)
- Threat
- QAR1(D),XP(g)
- Vars
- R(i);CHECK,XP(B)::S(C),XR(i)
- R(i);N_GUARD::QAB1(D)
- R(i);S_CUTB(b)::S(C)
- R(i);N_GUARD,SBLOCK::B(H)
- B(b);P_PINP(B),S_CUTR(i)::QAB1(D)
- B(h);P_PINQ(D),S_CUTR(i)::P(B)
- S(a);N_GUARD::QAB1(D),XS(a)
- P(d);N_GUARD,S_CUTQ(c)::S(F),XB(b)
- Refutation
- Q(c);
- Try
- B(H);CHECK
- Vars
- R(i);P_SPINR(i)::QAB1(D)
- Refutation
- K(e);S_FLIGHT
- Try
- P(B);CHECK
- Vars
- R(i);OGATE,XP(B)::QAB1(D),XR(i)
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- B(E);
- Threat
- QAR1(D),XP(g)
- Vars
- R(i);CHECK,XP(B)::S(C),XR(i)
- R(i);N_GUARD::QAB1(D)
- R(i);S_CUTB(b)::S(C)
- R(i);N_GUARD,SBLOCK::B(H)
- B(b);P_PINP(B),S_CUTR(i)::QAB1(D)
- B(h);P_PINQ(D),S_CUTR(i)::P(B)
- S(a);N_GUARD::QAB1(D),XS(a)
- P(d);N_GUARD,S_CUTQ(c)::S(F),XB(b)
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).