MESON Chess Problem Database
Problem Display
PID: 55937 (3Rr1b1/7p/RNP3pK/2k5/B4nPQ/2Bn4/1P1N4/1qb3r1 w - - 0 1)
Cornwell, WE
3rd HM., Brisbane Courier, 1914-1915
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sxe4#
- 1...Re6
- 2.Sb3#
- 1...Re7
- 2.Qxe7#
- 1...Rxd8
- 2.Se4#
- 1...Rf8
- 2.Se4#
- 2.Qe7#
- 1...Bb3
- 2.Sxb3#
- 1...Be6
- 2.Se4#
- 1...Sb4
- 2.Bd4#
- 1...Se5
- 2.Qf2#
- 1...Se6
- 2.Rd5#
- 1...Re4
- Tries
- 1.Qf2+?
- 1...Re3
- 2.Se4#
- 2.Qxe3#
- 1...Sxf2!
- 1...Re3
- 1.Qg5+?
- 1...Re5
- 2.Se4#
- 1...Bd5
- 2.Sb3#
- 1...Sd5
- 2.Sb3#
- 1...Se5!
- 1...Re5
- 1.Qf6?
- threat
- 2.Qd4#
- 2.Qd6#
- 1...Rxd8
- 2.Se4#
- 1...Re4
- 2.Sxe4#
- 2.Qd6#
- 1...Re5
- 2.Qd6#
- 1...Re6
- 2.Sb3#
- 2.Qd4#
- 1...Be6
- 2.Se4#
- 2.Qd4#
- 1...Se5
- 2.Qd6#
- 1...Se2
- 2.Qd6#
- 1...Se6
- 2.Rd5#
- 1...Rh1+!
- threat
- 1.b4+?
- 1...Sxb4
- 2.Bd4#
- 1...Qxb4!
- 1...Sxb4
- 1.Qf2+?
- Keys
- 1.c7!
- threat
- 2.c8Q#
- 2.c8R#
- 1...Qxb2
- 2.c8Q#
- 2.c8R#
- 1...Rxg4
- 2.c8Q#
- 2.c8R#
- 1...Rxd8
- 2.Se4#
- 1...Bxb2
- 2.c8Q#
- 2.c8R#
- 1...Bxd2
- 2.c8Q#
- 2.c8R#
- 1...Sxb2
- 2.c8Q#
- 2.c8R#
- 1...Sd5
- 2.Sd7#
- 1...Qa2
- 2.c8Q#
- 2.c8R#
- 1...Qc2
- 2.c8Q#
- 2.c8R#
- 1...Qa1
- 2.c8Q#
- 2.c8R#
- 1...Rd1
- 2.c8Q#
- 2.c8R#
- 1...Rge1
- 2.c8Q#
- 2.c8R#
- 1...Rf1
- 2.c8Q#
- 2.c8R#
- 1...Rh1
- 2.c8Q#
- 2.c8R#
- 1...Rg2
- 2.c8Q#
- 2.c8R#
- 1...Rg3
- 2.c8Q#
- 2.c8R#
- 1...Ree1
- 2.c8Q#
- 2.c8R#
- 1...Re2
- 2.c8Q#
- 2.c8R#
- 1...Re3
- 2.c8Q#
- 2.c8R#
- 1...Re4
- 2.Sxe4#
- 2.c8Q#
- 2.c8R#
- 1...Re5
- 2.c8Q#
- 2.c8R#
- 1...Re6
- 2.Sb3#
- 1...Re7
- 2.Qxe7#
- 1...Rf8
- 2.Se4#
- 2.Qe7#
- 2.c8Q#
- 2.c8R#
- 1...Ba2
- 2.c8Q#
- 2.c8R#
- 1...Bb3
- 2.Sxb3#
- 2.c8Q#
- 2.c8R#
- 1...Bc4
- 2.c8Q#
- 2.c8R#
- 1...Bd5
- 2.Sd7#
- 1...Be6
- 2.Se4#
- 1...Bf7
- 2.c8Q#
- 2.c8R#
- 1...Se1
- 2.c8Q#
- 2.c8R#
- 1...Sf2
- 2.c8Q#
- 2.c8R#
- 1...Sb4
- 2.Bd4#
- 1...Se5
- 2.Qf2#
- 1...Se2
- 2.c8Q#
- 2.c8R#
- 1...Sg2
- 2.c8Q#
- 2.c8R#
- 1...Sh3
- 2.c8Q#
- 2.c8R#
- 1...Sh5
- 2.c8Q#
- 2.c8R#
- 1...Se6
- 2.Rd5#
- 1...g5
- 2.c8Q#
- 2.c8R#
- threat
- 1.c7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(i);N_GUARD::S(B),XR(i)
- R(i);S_CUTB(j)::S(B)
- R(i);N_GUARD::QAB(F),XR(i)
- R(i);N_GUARD,XR(K)::S(B)
- B(j);N_GUARD::S(B),XB(j)
- B(j);S_CUTR(i)::S(B)
- S(d);SBLOCK::B(C)
- S(d);N_GUARD,S_CUTR(i)::QAB(F)
- S(e);N_GUARD,P_PINS(B),S_CUTB(j)::R1(K)
- Tries
- Try
- Q(F);CHECK
- Refutation
- S(d);XQ(F)
- Try
- Q(F);CHECK
- Vars
- R(i);P_SPINR(i)::S(B)
- B(j);P_SPINB(j)::S(B)
- S(e);P_SPINS(e)::S(B)
- Refutation
- S(d);P_SPINS(d)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(i);N_GUARD,XR(K)::S(B)
- R(i);::QAB1(F)
- S(d);::QAB1(F)
- S(e);P_PINS(B)::QAB1(F)
- S(e);N_GUARD,P_PINS(B),S_CUTB(j)::R1(K)
- Refutation
- R(c);CHECK
- Try
- P(A);CHECK
- Vars
- S(d);SBLOCK,XP(A)::B(C)
- Refutation
- Q(a);XP(A)
- Try
- Actual
- P(I);
- Threat
- P=Q
- Vars
- Q(a);XP(A)::P=Q
- R(c);XP(E)::P=Q
- R(i);N_GUARD,XR(K)::S(B)
- B(b);XP(A)::P=Q
- B(b);XS(B)::P=Q
- S(d);XP(A)::P=Q
- S(e);P_PINS(B),SBLOCK::S(H)
- Q(a);::P=Q
- R(c);::P=Q
- R(c);P_PINQ(F)::P=Q
- R(i);::P=Q
- R(i);S_CUTB(j)::S(B)
- R(i);N_GUARD::QAB(F),XR(i)
- B(j);::P=Q
- B(j);SBLOCK::S(H)
- B(j);S_CUTR(i)::S(B)
- S(d);::P=Q
- S(d);SBLOCK::B(C)
- S(d);N_GUARD,S_CUTR(i)::QAB(F)
- S(e);P_PINS(B)::P=Q
- S(e);N_GUARD,P_PINS(B),S_CUTB(j)::R1(K)
- P(g);::P=Q
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).