MESON Chess Problem Database
Problem Display
PID: 17995 (3R4/1n3N2/1Bpq4/2Pk4/2N2R2/p3P2B/3pn2K/r1bQ1b2 w - - 0 1)
Chandler, Guy Wills
The Problemist, 1952
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Sg1
- 2.Qh5#
- 1...Sc3
- 2.Qh5#
- 1...Sg3
- 2.Rd4#
- 1...Sa5
- 2.Rxd6#
- 1...Sxc5
- 2.Rxd6#
- 1...Sg1
- Tries
- 1.Sxd2?
- threat
- 2.Qb3#
- 1...Sxf4
- 2.Qf3#
- 1...Sxc5
- 2.Rxd6#
- 1...Sg1
- 2.Qh5#
- 1...Sc3
- 2.Qh5#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.e4#
- 1...Sa5
- 2.Rxd6#
- 1...Rb1!
- threat
- 1.Sa5?
- threat
- 2.Qb3#
- 1...Sxf4
- 2.Qf3#
- 1...Sxa5
- 2.Rxd6#
- 1...Sxc5
- 2.Rxd6#
- 1...Sg1
- 2.Qh5#
- 1...Sc3
- 2.Qh5#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.e4#
- 1...Rb1!
- threat
- 1.Sce5?
- threat
- 2.Qb3#
- 1...Sxf4
- 2.Qf3#
- 1...Sxc5
- 2.Rxd6#
- 1...Sg1
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 2.e4#
- 1...Sa5
- 2.Rxd6#
- 1...Rb1!
- threat
- 1.Scxd6?
- threat
- 2.Sxb7#
- 2.Qb3#
- 1...Bxh3
- 2.Qb3#
- 1...Sxf4
- 2.Qf3#
- 1...Sxd6
- 2.Rxd6#
- 2.Qb3#
- 1...Sxd8
- 2.Qb3#
- 1...Rb1
- 2.Sxb7#
- 1...Sg1
- 2.Sxb7#
- 2.Rd4#
- 2.Qh5#
- 1...Sc3
- 2.Sxb7#
- 2.Rd4#
- 2.Qh5#
- 1...Sg3
- 2.Sxb7#
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 2.e4#
- 1...Sa5
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sc8#
- 2.Se8#
- 1...Sxc5!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Bxh3
- 2.Qe4#
- 1...Sxc5
- 2.Rxd6#
- 2.Qf5#
- 1...Sxd8
- 2.Qe4#
- 1...Bb2
- 2.Qe4#
- 1...Bg2
- 2.Qf5#
- 1...Sc3
- 2.Qf5#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.e4#
- 1...Sxf4!
- threat
- 1.Qxf1?
- threat
- 2.Qg2#
- 2.Qh1#
- 2.Qf3#
- 1...Sxc5
- 2.Rxd6#
- 1...d1Q
- 2.Qg2#
- 2.Qf3#
- 1...d1R
- 2.Qg2#
- 2.Qf3#
- 1...Bb2
- 2.Qg2#
- 2.Qf3#
- 1...Sg1
- 2.Qd3#
- 1...Sc3
- 2.Qd3#
- 1...Sg3
- 2.Rd4#
- 2.Qd3#
- 1...Sd4
- 2.e4#
- 1...Sxf4!
- threat
- 1.Qxd2+?
- 1...Sd4
- 2.Qxd4#
- 1...Bxd2!
- 1...Sd4
- 1.Sxd2?
- Keys
- 1.Sb2!
- threat
- 2.Qb3#
- 1...Sxf4
- 2.Qf3#
- 1...Sxc5
- 2.Rxd6#
- 1...Sg1
- 2.Qh5#
- 1...Sc3
- 2.Qh5#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.e4#
- 1...Sa5
- 2.Rxd6#
- threat
- 1.Sb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(e);OGATE::QAR(A)
- S(e);N_PINR(F)::R1(F)
- S(j);N_GUARD::R1(J),XQ(i)
- S(j);N_GUARD,XP(G)::R1(J),XQ(i)
- Tries
- Try
- S(E);XP(d)
- Threat
- QAB(A)
- Vars
- S(e);OGATE,XR(F)::QAB(A)
- S(j);N_GUARD,XP(G)::R1(J),XQ(i)
- S(e);OGATE::QAR(A)
- S(e);N_PINR(F)::R1(F)
- S(e);SBLOCK::P(C)
- S(j);N_GUARD::R1(J),XQ(i)
- Refutation
- R(a);
- Try
- S(E);
- Threat
- QAB(A)
- Vars
- S(e);OGATE,XR(F)::QAB(A)
- S(j);N_GUARD,XS(E)::R1(J),XQ(i)
- S(j);N_GUARD,XP(G)::R1(J),XQ(i)
- S(e);OGATE::QAR(A)
- S(e);N_PINR(F)::R1(F)
- S(e);N_SPINP(d),SBLOCK::P(C)
- Refutation
- R(a);
- Try
- S(E);N_SPINR(F)
- Threat
- QAB(A)
- Vars
- S(e);OGATE,XR(F)::QAB(A)
- S(j);N_GUARD,XP(G)::R1(J),XQ(i)
- S(e);N_GUARD::R1(F)
- S(j);N_GUARD::R1(J),XQ(i)
- Refutation
- R(a);
- Try
- S(E);N_SPINR(F),XQ(i)
- Threat
- DUALS(2)
- Vars
- B(c);XB(D)::QAB(A)
- S(e);OGATE,XR(F)::QAB(A)
- S(j);XR(J)::QAB(A)
- R(a);::R(J)+S(E),XS(j)
- Refutation
- S(j);XP(G)
- Try
- Q(A);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- B(c);XB(D)::QAB1(A)
- S(j);N_SPINQ(i),XR(J)::QAB1(A)
- B(b);::QAB1(A)
- B(c);::QAR2(A)
- S(e);::QAR2(A)
- S(e);N_PINR(F)::R1(F)
- S(e);SBLOCK::P(C)
- Refutation
- S(e);XR(F)
- Try
- Q(A);N_PINP(d),XB(c)
- Threat
- DUALS(3)
- Vars
- S(j);N_GUARD,XP(G)::R1(J),XQ(i)
- S(e);OGATE::QAR2(A)
- S(e);SBLOCK::P(C)
- Refutation
- S(e);XR(F)
- Try
- Q(A);CHECK,XP(d)
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR1(A),XS(e)
- Refutation
- B(b);XQ(A)
- Try
- Actual
- S(E);
- Threat
- QAB(A)
- Vars
- S(e);OGATE,XR(F)::QAB(A)
- S(j);N_GUARD,XP(G)::R1(J),XQ(i)
- S(e);OGATE::QAR(A)
- S(e);N_PINR(F)::R1(F)
- S(e);N_SPINP(d),SBLOCK::P(C)
- S(j);N_GUARD::R1(J),XQ(i)
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).