MESON Chess Problem Database
Problem Display
PID: 197363 (k1K5/p7/2N5/3Rp3/p3B3/qp6/8/8 w - - 0 1)
Rice, John Michael
The Problemist, 1981
#2
4 + 6
SOLUTION
- SOUND
- Sets
- 1...a5
- 2.Rxa5#
- 1...a5
- Tries
- 1.Sb4?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxe5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc1+
- 2.Rc5#
- 1...a5
- 2.Rxa5#
- 2.Rd7#
- 1...a6
- 2.Rd7#
- 1...Qxb4!
- threat
- 1.Sa5?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rb5#
- 2.Rc5#
- 2.Rxe5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc1+
- 2.Rc5#
- 1...Qc5+
- 2.Rxc5#
- 1...Qf8+
- 2.Rd8#
- 1...a6
- 2.Rd7#
- 1...Qd6
- 2.Rxd6#
- 1...Qe7
- 2.Rd7#
- 1...Qb4!
- threat
- 1.Sxe5?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc1+
- 2.Rc5#
- 1...Qc5+
- 2.Rxc5#
- 1...Qf8+
- 2.Rd8#
- 1...a5
- 2.Rxa5#
- 2.Rd7#
- 1...a6
- 2.Rd7#
- 1...Qd6
- 2.Rxd6#
- 1...Qe7
- 2.Rd7#
- 1...Qb4!
- threat
- 1.Se7?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxe5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc1+
- 2.Rc5#
- 1...Qc5+
- 2.Rxc5#
- 1...Qxe7
- 2.Rd7#
- 1...a5
- 2.Rxa5#
- 2.Rd7#
- 1...a6
- 2.Rd7#
- 1...Qd6
- 2.Rxd6#
- 1...Qb4!
- threat
- 1.Sb8?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxe5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc1+
- 2.Rc5#
- 1...Qc5+
- 2.Rxc5#
- 1...Qf8+
- 2.Rd8#
- 1...a5
- 2.Rxa5#
- 2.Rd7#
- 1...a6
- 2.Rd7#
- 1...Qd6
- 2.Rxd6#
- 1...Qe7
- 2.Rd7#
- 1...Qb4!
- threat
- 1.Sd8?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxe5#
- 2.Rd6#
- 2.Rd7#
- 1...Qc1+
- 2.Rc5#
- 1...Qc5+
- 2.Rxc5#
- 1...a5
- 2.Rxa5#
- 2.Rd7#
- 1...a6
- 2.Rd7#
- 1...Qd6
- 2.Rxd6#
- 1...Qe7
- 2.Rd7#
- 1...Qb4!
- threat
- 1.Ra5?
- threat
- 2.Sb4#
- 2.Sd4#
- 2.Sxe5#
- 2.Sxa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Rxa7#
- 1...Qf8+
- 2.Sd8#
- 1...Qb4
- 2.Sxb4#
- 2.Rxa7#
- 1...Qc1
- 2.Rxa7#
- 1...Qd6
- 2.Rxa7#
- 1...Qe7
- 2.Sxe7#
- 1...a6
- 2.Rxa6#
- 1...Qc5!
- threat
- 1.Rb5?
- threat
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sxe5#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Rb8#
- 1...Qf8+
- 2.Sd8#
- 1...Qb4
- 2.Sxb4#
- 2.Sd4#
- 1...Qc1
- 2.Rb8#
- 1...Qc5
- 2.Rb8#
- 1...Qe7
- 2.Sxe7#
- 2.Rb8#
- 1...a5
- 2.Rxa5#
- 2.Rb8#
- 1...a6
- 2.Rb8#
- 1...Qd6!
- threat
- 1.Rd7?
- threat
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sxe5#
- 2.Sxa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Rxa7#
- 1...Qf8+
- 2.Sd8#
- 1...Qb4
- 2.Sxb4#
- 2.Rxa7#
- 1...Qc1
- 2.Rxa7#
- 1...Qd6
- 2.Rxa7#
- 1...Qe7
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sxe5#
- 2.Sxa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Sd8#
- 1...a5
- 2.Sb4#
- 2.Sd4#
- 2.Sxa5#
- 2.Sxe5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Ra7#
- 1...a6
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sxe5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Ra7#
- 1...Qc5!
- threat
- 1.Rd8?
- threat
- 2.Kc7#
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sxe5#
- 2.Se7#
- 2.Sb8#
- 1...Qb4
- 2.Sxb4#
- 1...Qc1
- 2.Kc7#
- 1...Qc5
- 2.Kc7#
- 1...Qe7
- 2.Sxe7#
- 1...Qf8
- 2.Sb4#
- 2.Sd4#
- 2.Sa5#
- 2.Sxe5#
- 2.Se7#
- 2.Sb8#
- 1...a5
- 2.Kc7#
- 1...a6
- 2.Kc7#
- 1...Qd6!
- threat
- 1.Sb4?
- Keys
- 1.Sd4!
- threat
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxe5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc1+
- 2.Rc5#
- 1...Qc5+
- 2.Rxc5#
- 1...Qf8+
- 2.Rd8#
- 1...exd4
- 2.Rxd4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...a5
- 2.Rxa5#
- 2.Rd7#
- 1...a6
- 2.Rd7#
- 1...Qb4
- 2.Rb5#
- 1...Qd6
- 2.Rxd6#
- 1...Qe7
- 2.Rd7#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- P(e);OGATEB::R(B),XP(e)
- Tries
- Try
- S(C);
- Threat
- DUALS(11)
- Vars
- Q(a);CHECK::B(A)+R(B)
- P(e);::B(A)+R(B)
- Refutation
- Q(a);XS(C)
- Try
- S(C);
- Threat
- DUALS(10)
- Vars
- Q(a);CHECK::B(A)+R(B)
- Q(a);CHECK::B(A)+R(B),XQ(a)
- P(e);::B(A)+R(B)
- Q(a);::B(A)+R(B),XQ(a)
- Q(a);::B(A)+R(B)
- Refutation
- Q(a);
- Try
- S(C);XP(d)
- Threat
- DUALS(10)
- Vars
- Q(a);CHECK::B(A)+R(B)
- Q(a);CHECK::B(A)+R(B),XQ(a)
- P(e);::B(A)+R(B)
- Q(a);::B(A)+R(B),XQ(a)
- Q(a);::B(A)+R(B)
- Refutation
- Q(a);
- Try
- S(C);
- Threat
- DUALS(11)
- Vars
- Q(a);CHECK::B(A)+R(B)
- Q(a);CHECK::B(A)+R(B),XQ(a)
- Q(a);XS(C)::B(A)+R(B)
- P(e);::B(A)+R(B)
- Q(a);::B(A)+R(B),XQ(a)
- Refutation
- Q(a);
- Try
- S(C);
- Threat
- DUALS(11)
- Vars
- Q(a);CHECK::B(A)+R(B)
- Q(a);CHECK::B(A)+R(B),XQ(a)
- P(e);::B(A)+R(B)
- Q(a);::B(A)+R(B),XQ(a)
- Q(a);::B(A)+R(B)
- Refutation
- Q(a);
- Try
- S(C);
- Threat
- DUALS(10)
- Vars
- Q(a);CHECK::B(A)+R(B)
- Q(a);CHECK::B(A)+R(B),XQ(a)
- P(e);::B(A)+R(B)
- Q(a);::B(A)+R(B),XQ(a)
- Q(a);::B(A)+R(B)
- Refutation
- Q(a);
- Try
- R(B);P_PINP(e)
- Threat
- DUALS(8)
- Vars
- Q(a);CHECK::B(A)+S(C)
- Q(a);P_PINS(C)::R1(B),XP(e)
- Q(a);::R1(B),XP(e)
- Q(a);::B(A)+S(C),XQ(a)
- P(e);OGATEB::R(B),XP(e)
- Refutation
- Q(a);P_PINS(C)
- Try
- R(B);
- Threat
- DUALS(8)
- Vars
- Q(a);CHECK::B(A)+S(C)
- Q(a);P_PINS(C)::R1(B)
- P(e);::R1(B)
- Refutation
- Q(a);
- Try
- R(B);
- Threat
- DUALS(9)
- Vars
- Q(a);CHECK::B(A)+S(C)
- Q(a);P_PINS(C)::R1(B),XP(e)
- Q(a);::R1(B),XP(e)
- Refutation
- Q(a);P_PINS(C)
- Try
- R(B);
- Threat
- DUALS(7)
- Vars
- Q(a);::B(A)+S(C),XQ(a)
- Q(a);P_PINS(C)::R(B)+K(D)
- P(e);::R(B)+K(D)
- Refutation
- Q(a);
- Try
- Actual
- S(C);
- Threat
- DUALS(7)
- Vars
- Q(a);CHECK::B(A)+R(B)
- Q(a);CHECK::B(A)+R(B),XQ(a)
- P(e);::B(A)+R(B)
- Q(a);::B(A)+R(B)
- Q(a);::B(A)+R(B),XQ(a)
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).