MESON Chess Problem Database
Problem Display
PID: 147301 (8/2n3p1/2Bp2P1/3R4/PPk1r3/3Np3/1KN3qR/6BQ w - - 0 1)
Saunders, Denis M
British Chess Magazine, 1983
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sa3#
- 2.Qxe4#
- 1...Qxh1
- 2.Sa3#
- 1...Qf3
- 2.Sa3#
- 1...Qh3
- 2.Sa3#
- 2.Qxe4#
- 1...Qxg1
- 2.Sa3#
- 2.Qxe4#
- 1...Qxc2+
- 2.Rxc2#
- 1...Qd2
- 2.Qxe4#
- 1...Qe2
- 2.Qxe4#
- 1...Qf2
- 2.Qxe4#
- 1...Qxh2
- 2.Qxe4#
- 1...Qg3
- 2.Sa3#
- 2.Qxe4#
- 1...Qg4
- 2.Sa3#
- 1...Qg5
- 2.Sa3#
- 2.Qxe4#
- 1...Qxg6
- 2.Sa3#
- 1...Rd4
- 2.Rxd4#
- 1...Re5
- 2.Rd4#
- 1...Re6
- 2.Rd4#
- 1...Re7
- 2.Rd4#
- 1...Re8
- 2.Rd4#
- 1...Sxd5
- 2.Bb5#
- 1...e2
- 2.Sa3#
- 1...Qf1
- Tries
- 1.Se5+?
- 1...Rxe5
- 2.Rd4#
- 1...dxe5!
- 1...Rxe5
- 1.Bf2?
- threat
- 2.Sa3#
- 1...Qxf2
- 2.Qxe4#
- 1...Sxd5
- 2.Bb5#
- 1...Rd4
- 2.Rxd4#
- 1...Sb5!
- threat
- 1.Rxg2?
- threat
- 2.Sa3#
- 1...Sxd5
- 2.Bb5#
- 1...Rd4
- 2.Rxd4#
- 1...Sb5!
- threat
- 1.Qxg2?
- threat
- 2.Sa3#
- 2.Qxe4#
- 1...Sxd5
- 2.Bb5#
- 2.Qxe4#
- 1...Rd4
- 2.Rxd4#
- 1...Rf4
- 2.Sa3#
- 2.Sxe3#
- 1...Rg4
- 2.Sa3#
- 2.Sxe3#
- 2.Qxg4#
- 1...Rh4
- 2.Sa3#
- 2.Sxe3#
- 2.Rxh4#
- 1...Re5
- 2.Sa3#
- 2.Rd4#
- 1...Re6
- 2.Sa3#
- 2.Rd4#
- 1...Re7
- 2.Sa3#
- 2.Rd4#
- 1...Re8
- 2.Sa3#
- 2.Rd4#
- 1...Se6
- 2.Sa3#
- 1...Sb5!
- threat
- 1.Se5+?
- Keys
- 1.Rxd6!
- 1...Qxc2+
- 2.Rxc2#
- 1...Qxh1
- 2.Sa3#
- 1...Qxg1
- 2.Sa3#
- 2.Qxe4#
- 1...Qxh2
- 2.Qxe4#
- 1...Qxg6
- 2.Sa3#
- 1...Rd4
- 2.Se5#
- 2.Rxd4#
- 1...Sd5
- 2.Bb5#
- 1...Sb5
- 2.Bxb5#
- 1...Qf1
- 2.Sa3#
- 2.Qxe4#
- 1...Qf3
- 2.Sa3#
- 1...Qh3
- 2.Sa3#
- 2.Qxe4#
- 1...Qd2
- 2.Qxe4#
- 1...Qe2
- 2.Qxe4#
- 1...Qf2
- 2.Qxe4#
- 1...Qg3
- 2.Sa3#
- 2.Qxe4#
- 1...Qg4
- 2.Sa3#
- 1...Qg5
- 2.Sa3#
- 2.Qxe4#
- 1...Rf4
- 2.Se5#
- 1...Rg4
- 2.Se5#
- 1...Rh4
- 2.Se5#
- 1...Re5
- 2.Sxe5#
- 2.Rd4#
- 1...Re6
- 2.Rd4#
- 1...Re7
- 2.Rd4#
- 1...Re8
- 2.Rd4#
- 1...Sa6
- 2.Bb5#
- 1...Se6
- 2.Bb5#
- 1...Sa8
- 2.Bb5#
- 1...Se8
- 2.Bb5#
- 1...e2
- 2.Sa3#
- 1...Qxc2+
- 1.Rxd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 2
- Sets
- Q(a);N_PINS(D),XQ(B)::S(D)
- Q(a);N_PINS(D)::S(D)
- Q(a);CHECK,OGATE,XS(D)::R(E),XQ(a)
- Q(a);OGATE::QAR2(B),XR(d)
- Q(a);OGATE,XR(E)::QAR2(B),XR(d)
- Q(a);N_PINS(D),XP(K)::S(D)
- R(d);N_GUARD::R1(I),XR(d)
- R(d);N_GUARD::R1(I)
- S(f);N_GUARD,SBLOCK,XR(I)::B(J)
- P(b);N_PINS(D)::S(D)
- Tries
- Try
- S(F);CHECK
- Vars
- R(d);XS(F)::R1(I)
- Refutation
- P(e);XS(F)
- Try
- B(A);N_SPINS(D)
- Threat
- S(D)
- Vars
- Q(a);OGATE,P_PINS(D),XB(A)::QAR2(B),XR(d)
- S(f);N_GUARD,SBLOCK,XR(I)::B(J)
- R(d);N_GUARD::R1(I),XR(d)
- Refutation
- S(f);
- Try
- R(E);N_SPINS(D),XQ(a)
- Threat
- S(D)
- Vars
- S(f);N_GUARD,SBLOCK,XR(I)::B(J)
- R(d);N_GUARD::R1(I),XR(d)
- Refutation
- S(f);
- Try
- Q(B);N_SPINS(D),XQ(a)
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD::R1(I),XR(d)
- S(f);::S(D)
- Refutation
- S(f);
- Try
- Actual
- R(I);XP(e)
- Vars
- Q(a);CHECK,OGATE,XS(D)::R(E),XQ(a)
- Q(a);N_PINS(D),XQ(B)::S(D)
- Q(a);OGATE,XR(E)::QAR2(B),XR(d)
- Q(a);N_PINS(D),XP(K)::S(D)
- S(f);N_GUARD::B(J)
- S(f);N_GUARD::B(J),XS(f)
- Q(a);N_PINS(D)::S(D)
- Q(a);OGATE::QAR2(B),XR(d)
- R(d);N_GUARD::S(F)
- R(d);N_GUARD::R1(I)
- P(b);N_PINS(D)::S(D)
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).