MESON Chess Problem Database
Problem Display
PID: 132735 (n1B2B2/1K1NN3/p2kp3/P3r1p1/2p3n1/3q2Q1/8/1R1R4 w - - 0 1)
Sumner, Christopher Richard Benson
The Field, 1958
(First published on Thu May 8 1958)
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxd1
- 2.Rxd1#
- 1...Qd2
- 2.Rxd2#
- 1...Qd4
- 2.Rxd4#
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...Sf2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sb6
- 2.Rxb6#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...Qxd1
- Tries
- 1.Rb2?
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...Sb6
- 2.Rxb6#
- 1...Qd2
- 2.Rdxd2#
- 2.Rbxd2#
- 1...Qd4
- 2.Rxd4#
- 1...Sf2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...Qxd1!
- 1...Qd5+
- 1.Rb3?
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...cxb3
- 2.Rxd3#
- 1...Sb6
- 2.Rxb6#
- 1...Qd2
- 2.Rxd2#
- 1...Qd4
- 2.Rxd4#
- 1...Sf2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...Qxd1!
- 1...Qd5+
- 1.Rb4?
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...Sb6
- 2.Rxb6#
- 1...Qd2
- 2.Rxd2#
- 1...Qd4
- 2.Rxd4#
- 1...Sf2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...Qxd1!
- 1...Qd5+
- 1.Rb5?
- threat
- 2.Sd5#
- 2.Sf5#
- 2.Sc6#
- 2.Sg6#
- 2.Sg8#
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...axb5!
- threat
- 1.Rd2?
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...Sb6
- 2.Rxb6#
- 1...Qd4
- 2.Rxd4#
- 1...Sf2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...Qxd2!
- 1...Qd5+
- 1.Qh2?
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...Qxd1
- 2.Rxd1#
- 1...Sb6
- 2.Rxb6#
- 1...Qd2
- 2.Rxd2#
- 1...Qd4
- 2.Rxd4#
- 1...Sf2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...Sxh2!
- 1...Qd5+
- 1.Qf4?
- 1...Qd5+
- 2.Sxd5#
- 2.Sc6#
- 1...Qxd1
- 2.Rxd1#
- 1...Sb6
- 2.Rxb6#
- 1...Qd2
- 2.Rxd2#
- 1...Qd4
- 2.Rxd4#
- 1...Sf2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...gxf4!
- 1...Qd5+
- 1.Qxd3+?
- 1...Rd5
- 2.Sxd5#
- 2.Sf5#
- 2.Sc6#
- 2.Sg6#
- 2.Sg8#
- 2.Qa3#
- 1...cxd3!
- 1...Rd5
- 1.Rb2?
- Keys
- 1.Kb8!
- 1...Qxd1
- 2.Rxd1#
- 1...Qd2
- 2.Rxd2#
- 1...Qd4
- 2.Rxd4#
- 1...Qd5
- 2.Qa3#
- 1...Sf2
- 2.Qxe5#
- 1...Sh2
- 2.Qxe5#
- 1...Se3
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sh6
- 2.Qxe5#
- 1...Sb6
- 2.Rxb6#
- 1...Sc7
- 2.Rb6#
- 1...c3
- 2.Rxd3#
- 1...Qxd1
- 1.Kb8!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(a);N_SPINQ(a),OGATE,XR(B)::R(A),XQ(a)
- Q(a);OGATEB::R(B),XQ(a)
- Q(a);OGATE::R(B),XQ(a)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A),XS(i)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::R(B),XQ(a)
- Tries
- Try
- R(A);
- Vars
- S(i);N_GUARD::R(A),XS(i)
- Q(a);OGATE::R(B),XQ(a)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::R(B),XQ(a)
- Refutation
- Q(a);N_SPINQ(a),XR(B)
- Try
- R(A);
- Vars
- P(b);N_GUARD,XR(A)::R(B),XQ(a)
- S(i);N_GUARD::R(A),XS(i)
- Q(a);OGATEB::R(B),XQ(a)
- Q(a);OGATE::R(B),XQ(a)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::R(B),XQ(a)
- Refutation
- Q(a);N_SPINQ(a),XR(B)
- Try
- R(A);
- Vars
- S(i);N_GUARD::R(A),XS(i)
- Q(a);OGATEB::R(B),XQ(a)
- Q(a);OGATE::R(B),XQ(a)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::R(B),XQ(a)
- Refutation
- Q(a);N_SPINQ(a),XR(B)
- Try
- R(A);
- Threat
- DUALS(5)
- Refutation
- P(f);XR(A)
- Try
- R(B);
- Vars
- S(i);N_GUARD::R(A),XS(i)
- Q(a);OGATE::R(B),XQ(a)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::R(B),XQ(a)
- Refutation
- Q(a);N_SPINQ(a),XR(B)
- Try
- Q(C);
- Vars
- Q(a);N_SPINQ(a),OGATE,XR(B)::R(A),XQ(a)
- S(i);N_GUARD::R(A),XS(i)
- Q(a);OGATEB::R(B),XQ(a)
- Q(a);OGATE::R(B),XQ(a)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::R(B),XQ(a)
- Refutation
- S(c);N_SPINR(d),XQ(C)
- Try
- Q(C);
- Vars
- Q(a);N_SPINQ(a),OGATE,XR(B)::R(A),XQ(a)
- S(i);N_GUARD::R(A),XS(i)
- Q(a);OGATEB::R(B),XQ(a)
- Q(a);OGATE::R(B),XQ(a)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::R(B),XQ(a)
- Refutation
- P(e);N_SPINR(d),XQ(C)
- Try
- Q(C);CHECK,N_PINR(d),XQ(a)
- Refutation
- P(b);P_SPINP(b),XQ(C)
- Try
- Actual
- K(E);P-FLIGHT
- Vars
- Q(a);N_SPINQ(a),OGATE,XR(B)::R(A),XQ(a)
- Q(a);OGATEB::R(B),XQ(a)
- Q(a);OGATE::R(B),XQ(a)
- Q(a);OGATE::QAB(C)
- S(c);N_GUARD::QAB1(C),XR(d)
- S(i);N_GUARD::R(A),XS(i)
- S(i);N_GUARD::R(A)
- P(b);N_GUARD::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).