MESON Chess Problem Database
Problem Display
PID: 18990 (3b4/1n1p4/b7/8/1B1k2N1/5R2/Q2N1rp1/KB6 w - - 0 1)
Blake, Percy Francis
HM., Chess Amateur (The), 1911
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxd2
- 2.Rf4#
- 1...Rxf3
- 2.Sxf3#
- 1...Bd3
- 2.Rxd3#
- 1...Bc4
- 2.Qxc4#
- 1...Sc5
- 2.Bc3#
- 1...d5
- 2.Qb2#
- 1...Rxd2
- Tries
- 1.Se3?
- threat
- 2.Qd5#
- 2.Qb2#
- 1...Ke5
- 2.Qd5#
- 1...Rxd2
- 2.Qd5#
- 1...Bc4
- 2.Qb2#
- 1...d5
- 2.Qxd5#
- 2.Qb2#
- 1...Rxf3!
- threat
- 1.Rxf2?
- threat
- 2.Sf3#
- 2.Rf4#
- 1...Bc4
- 2.Qxc4#
- 1...g1S
- 2.Rf4#
- 1...Be2
- 2.Rf4#
- 1...Bg5
- 2.Sf3#
- 1...Bc7
- 2.Sf3#
- 1...Sc5
- 2.Sf3#
- 1...Sd6
- 2.Sf3#
- 1...Bd3!
- threat
- 1.Rf5?
- threat
- 2.Rd5#
- 2.Qd5#
- 2.Qb2#
- 1...Rxd2
- 2.Rf4#
- 2.Rd5#
- 2.Qd5#
- 1...Rf3
- 2.Sxf3#
- 2.Rd5#
- 2.Qd5#
- 1...Bc4
- 2.Qxc4#
- 2.Qb2#
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 2.Qb2#
- 1...Rxf5!
- threat
- 1.Qe6?
- threat
- 2.Sb3#
- 2.Qe4#
- 2.Qe5#
- 1...Rxd2
- 2.Rf4#
- 2.Qe4#
- 1...Rxf3
- 2.Sxf3#
- 2.Qe4#
- 2.Qe5#
- 1...Re2
- 2.Sb3#
- 1...Bd3
- 2.Sb3#
- 2.Rxd3#
- 2.Qe5#
- 1...Bc4
- 2.Qxc4#
- 2.Qe4#
- 2.Qe5#
- 1...Bf6
- 2.Sb3#
- 2.Qe4#
- 1...Bc7
- 2.Sb3#
- 2.Qe4#
- 1...Sa5
- 2.Qxd7#
- 2.Qe4#
- 2.Qe5#
- 2.Qd6#
- 1...Sc5
- 2.Bc3#
- 2.Qe5#
- 2.Qd6#
- 1...Sd6
- 2.Sb3#
- 2.Qe5#
- 2.Qxd6#
- 1...d5
- 2.Qe3#
- 2.Qe5#
- 1...d6
- 2.Sb3#
- 2.Qe4#
- 1...dxe6!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 1...Kd5
- 2.Qe4#
- 1...Bd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Sc5
- 2.Qxc5#
- 1...Sd6
- 2.Qc5#
- 1...d5
- 2.Sb3#
- 2.Qb2#
- 2.Qc3#
- 1...Re2!
- threat
- 1.Qxa6?
- threat
- 2.Rd3#
- 2.Qd3#
- 2.Qc4#
- 1...Kd5
- 2.Rd3#
- 2.Qc4#
- 1...Rxf3
- 2.Qc4#
- 1...Sa5
- 2.Rd3#
- 2.Qd3#
- 2.Qd6#
- 1...Sc5
- 2.Qc4#
- 2.Qd6#
- 1...Sd6
- 2.Rd3#
- 2.Qd3#
- 2.Qxd6#
- 1...d5
- 2.Sb3#
- 2.Rd3#
- 2.Qd3#
- 1...Rxd2!
- threat
- 1.Se3?
- Keys
- 1.Qf7!
- threat
- 2.Sb3#
- 1...Rxd2
- 2.Rf4#
- 1...Rxf3
- 2.Sxf3#
- 1...Bd3
- 2.Rxd3#
- 1...Bc4
- 2.Qxc4#
- 1...Sa5
- 2.Qxd7#
- 1...Sc5
- 2.Bc3#
- 1...d5
- 2.Qf4#
- threat
- 1.Qf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD,XS(D)::R(E)
- R(a);XR(E)::S(D),XR(a)
- B(d);N_GUARD::R1(E),XB(d)
- B(d);N_GUARD::QAR1(C),XB(d)
- S(e);SBLOCK::B(F)
- P(f);SBLOCK::QAB(C)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- K(c);S_FLIGHT::QAR1(C)
- R(a);XS(D)::QAR1(C)
- B(d);::QAB(C)
- Refutation
- R(a);XR(E)
- Try
- R(E);XR(a)
- Threat
- DUALS(2)
- Vars
- B(d);N_GUARD::QAR1(C),XB(d)
- P(b);::R(E)
- B(d);::R(E)
- B(g);::S(D)
- S(e);::S(D)
- Refutation
- B(d);
- Try
- R(E);
- Threat
- DUALS(3)
- Refutation
- R(a);XR(E)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(a);::S(D)
- Refutation
- P(f);XQ(C)
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- K(c);P-FLIGHT::QAB1(C)
- S(e);N_GUARD::QAB1(C),XS(e)
- S(e);N_GUARD::QAB1(C)
- Refutation
- R(a);
- Try
- Q(C);XB(d)
- Threat
- DUALS(3)
- Vars
- R(a);XR(E)::QAR1(C)
- Refutation
- R(a);XS(D)
- Try
- Actual
- Q(C);
- Threat
- S(D)
- Vars
- R(a);N_GUARD,XS(D)::R(E)
- R(a);XR(E)::S(D),XR(a)
- B(d);N_GUARD::R1(E),XB(d)
- B(d);N_GUARD::QAR1(C),XB(d)
- S(e);N_GUARD::QAR(C),XP(f)
- S(e);SBLOCK::B(F)
- P(f);SBLOCK::QAR2(C)
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).