MESON Chess Problem Database
Problem Display
PID: 140085 (8/5p2/K7/1p3p1B/1b6/2N5/QRpn1kNB/6R1 w - - 0 1)
Thomas, WG
The Problemist, 1938
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Sd1#
- 1...Sf1
- 2.Sd1#
- 1...Sb3
- 2.Sd1#
- 1...Sc4
- 2.Sd1#
- 1...Se4
- 2.Sd1#
- 1...c1S
- 2.Sd1#
- 1...c1B
- 2.Sd1#
- 1...c1R
- 2.Rxd2#
- 1...Sb1
- Tries
- 1.Qc4?
- threat
- 2.Qe2#
- 2.Qd4#
- 2.Qh4#
- 1...Bxc3
- 2.Qe2#
- 2.Qh4#
- 1...Sxc4
- 2.Sd1#
- 1...c1S
- 2.Sd1#
- 2.Qf1#
- 2.Qd4#
- 2.Qf4#
- 2.Qh4#
- 1...Bc5
- 2.Qe2#
- 2.Qh4#
- 2.Qxc5#
- 1...Bd6
- 2.Qe2#
- 2.Qd4#
- 1...Be7
- 2.Qe2#
- 2.Qd4#
- 1...Sf1
- 2.Sd1#
- 2.Qxf1#
- 2.Qe2#
- 2.Qf4#
- 1...Sb3
- 2.Sd1#
- 2.Qf1#
- 2.Qe2#
- 2.Qf4#
- 2.Qh4#
- 1...Sf3
- 2.Sd1#
- 2.Qf1#
- 2.Qe2#
- 1...Se4
- 2.Sd1#
- 2.Qf1#
- 2.Qe2#
- 2.Qd4#
- 1...f4
- 2.Qe2#
- 2.Qd4#
- 1...bxc4!
- threat
- 1.Qd5?
- threat
- 2.Qxd2#
- 2.Qd4#
- 1...c1Q
- 2.Qf3#
- 2.Qd4#
- 2.Qxf5#
- 1...c1S
- 2.Sd1#
- 2.Qf3#
- 2.Qd4#
- 2.Qxf5#
- 1...c1B
- 2.Sd1#
- 2.Qf3#
- 2.Qd4#
- 2.Qxf5#
- 1...Bc5
- 2.Qxd2#
- 2.Qxc5#
- 1...Sb1
- 2.Sd1#
- 2.Qf3#
- 2.Qd4#
- 2.Qxf5#
- 1...Sf1
- 2.Sd1#
- 2.Qf3#
- 2.Qxf5#
- 1...Sb3
- 2.Sd1#
- 2.Qf3#
- 2.Qxf5#
- 1...Sf3
- 2.Qxf3#
- 1...Sc4
- 2.Sd1#
- 2.Qf3#
- 2.Qxf5#
- 1...Se4
- 2.Sd1#
- 2.Qd4#
- 2.Qxf5#
- 1...Bxc3!
- threat
- 1.Qe6?
- threat
- 2.Qe1#
- 2.Qe2#
- 2.Qe3#
- 1...c1Q
- 2.Qxf5#
- 2.Qe2#
- 2.Qe3#
- 1...c1S
- 2.Sd1#
- 2.Qxf5#
- 2.Qe1#
- 2.Qe3#
- 1...c1R
- 2.Rxd2#
- 2.Qxf5#
- 2.Qe2#
- 2.Qe3#
- 1...Bc5
- 2.Qe1#
- 2.Qe2#
- 1...Sf1
- 2.Sd1#
- 2.Qxf5#
- 2.Qe1#
- 2.Qe2#
- 1...Sf3
- 2.Sd1#
- 2.Qe2#
- 2.Qe3#
- 1...Sc4
- 2.Sd1#
- 2.Qxf5#
- 2.Qe1#
- 2.Qe2#
- 1...Se4
- 2.Sd1#
- 2.Qxf5#
- 1...f4
- 2.Qe1#
- 2.Qe2#
- 1...fxe6!
- threat
- 1.Qa1?
- threat
- 2.Qe1#
- 1...c1S
- 2.Sd1#
- 1...c1B
- 2.Sd1#
- 1...c1R
- 2.Rxd2#
- 1...Sb1
- 2.Sd1#
- 1...Sf3
- 2.Qf1#
- 1...c1Q!
- threat
- 1.Qc4?
- Keys
- 1.Qb1!
- threat
- 2.Qe1#
- 1...Sxb1
- 2.Sd1#
- 1...cxb1Q
- 2.Rxd2#
- 1...cxb1S
- 2.Sd1#
- 1...cxb1B
- 2.Sd1#
- 2.Rxd2#
- 1...cxb1R
- 2.Rxd2#
- 1...c1Q
- 2.Qxf5#
- 1...c1S
- 2.Sd1#
- 2.Qxf5#
- 1...c1B
- 2.Sd1#
- 2.Qxf5#
- 1...c1R
- 2.Rxd2#
- 2.Qxf5#
- 1...Sf3
- 2.Qf1#
- threat
- 1.Qb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- S(b);P_SPINP(a)::S(F)
- P(a);N_GUARD,P_SPINS(b)::S(F)
- P(a);OGATE,P_SPINS(b)::R(C),XS(b)
- Tries
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(b);P_SPINP(a),XQ(B)::S(F)
- Refutation
- P(e);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,P_SPINP(a)::QAR1(B),XS(b)
- Refutation
- B(d);XS(F)
- Try
- Q(B);
- Threat
- DUALS(3)
- Refutation
- P(g);XQ(B)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- P(a);N_GUARD,P_SPINS(b)::S(F)
- P(a);OGATE,P_SPINS(b)::R(C),XS(b)
- S(b);P_SPINP(a)::S(F)
- S(b);N_GUARD,P_SPINP(a)::QAR1(B)
- Refutation
- P(a);P_SPINS(b)
- Try
- Actual
- Q(B);
- Threat
- QAB1(B)
- Vars
- S(b);P_SPINP(a),XQ(B)::S(F)
- P(a);OGATE,P_SPINS(b),XQ(B)::R(C),XS(b)
- P(a);N_GUARD,P_SPINS(b),XQ(B)::S(F)
- P(a);OGATE,P_SPINS(b)::QAR(B),XP(f)
- S(b);N_GUARD,P_SPINP(a)::QAR1(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).