MESON Chess Problem Database
Problem Display
PID: 162746 (5Q1q/r7/2PbN1R1/3Nknp1/1rpRP2n/2P2b2/2B2K2/8 w - - 0 1)
Ewald, Kurt
Die Schwalbe, 2015
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qf6
- 2.Qxf6#
- 1...Qh5
- 2.Qf6#
- 1...Qh6
- 2.Qf6#
- 1...Qh7
- 2.Qf6#
- 1...Qg8
- 2.Qf6#
- 1...Rg7
- 2.Qf6#
- 1...Sg2
- 2.Qxf5#
- 1...Sxg6
- 2.Qxf5#
- 1...Sxd4
- 2.cxd4#
- 1...Se7
- 2.Qxh8#
- 1...Sg7
- 2.Qf6#
- 1...Qf6
- Tries
- 1.Se3?
- threat
- 2.Rd5#
- 1...Bxe4
- 2.Sg4#
- 2.Rxe4#
- 1...Sxg6
- 2.Qxf5#
- 1...Sxe3
- 2.Qxd6#
- 1...Sxd4
- 2.cxd4#
- 1...Qf6
- 2.Qxf6#
- 1...Rb5
- 2.Sxc4#
- 1...Se7
- 2.Qxh8#
- 1...Ra5!
- threat
- 1.Sxb4?
- threat
- 2.Rd5#
- 1...Bxe4
- 2.Rxe4#
- 1...Sxg6
- 2.Qxf5#
- 1...Sxd4
- 2.cxd4#
- 1...Qf6
- 2.Qxf6#
- 1...Bc5
- 2.Qxc5#
- 1...Se3
- 2.Qxd6#
- 1...Se7
- 2.Qxh8#
- 1...Ra5!
- threat
- 1.Sxg5?
- threat
- 2.Re6#
- 1...Sxg6
- 2.Qxf5#
- 1...Sxd4
- 2.Qxd6#
- 2.Qf4#
- 1...Qf6
- 2.Qxf6#
- 1...Qh6
- 2.Qf6#
- 1...Qg8
- 2.Qf6#
- 1...Sg7
- 2.Qxd6#
- 2.Qf4#
- 2.Qf6#
- 1...Re7!
- threat
- 1.Sg7?
- threat
- 2.Re6#
- 2.Qf6#
- 1...Qxf8
- 2.Re6#
- 1...Rxg7
- 2.Qf6#
- 1...Bxf8
- 2.Re6#
- 1...Sxg6
- 2.Qxf5#
- 2.Qf6#
- 1...Sxd4
- 2.Qxd6#
- 2.Qf6#
- 1...Sxg7
- 2.Qxd6#
- 2.Qf6#
- 1...Qh6
- 2.Qf6#
- 1...Qg8
- 2.Qf6#
- 1...Re7
- 2.Qf6#
- 1...Rf7
- 2.Re6#
- 1...Be7
- 2.Re6#
- 1...Qxg7!
- threat
- 1.Sd8?
- threat
- 2.Re6#
- 1...Sxg6
- 2.Qxf5#
- 1...Sxd4
- 2.Qxd6#
- 1...Qf6
- 2.Qxf6#
- 1...Qh6
- 2.Qf6#
- 1...Qg8
- 2.Qf6#
- 1...Sg7
- 2.Qxd6#
- 2.Qf6#
- 1...Re7!
- threat
- 1.Se3?
- Keys
- 1.Sb6!
- threat
- 2.Rd5#
- 1...Bxe4
- 2.Rxe4#
- 1...Sxg6
- 2.Qxf5#
- 1...Sxd4
- 2.cxd4#
- 1...Qf6
- 2.Qxf6#
- 1...Ra5
- 2.Sd7#
- 1...Rb5
- 2.Sxc4#
- 1...Bc5
- 2.Qxc5#
- 1...Se3
- 2.Qxd6#
- 1...Se7
- 2.Qxh8#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- Q(j);N_GUARD::QAB1(J),XQ(j)
- Q(j);N_GUARD::QAB1(J)
- R(i);S_CUTQ(j)::QAB1(J)
- S(d);N_GUARD::QAR1(J),XS(f)
- S(d);N_GUARD,XR(I)::QAR1(J),XS(f)
- S(f);OGATE,XR(D)::P(C),XS(f)
- S(f);N_GUARD,S_CUTR(i)::QAB(J),XQ(j)
- S(f);S_CUTQ(j)::QAB1(J)
- Tries
- Try
- S(F);
- Threat
- R1(D)
- Vars
- S(d);N_GUARD,XR(I)::QAR1(J),XS(f)
- S(f);N_GUARD,XS(F)::QAB1(J),XB(h)
- S(f);OGATE,XR(D)::P(C),XS(f)
- Q(j);N_GUARD::QAB1(J),XQ(j)
- R(b);N_GUARD::S(F),XP(c)
- S(f);N_GUARD,S_CUTR(i)::QAB(J),XQ(j)
- Refutation
- R(i);
- Try
- S(F);XR(b)
- Threat
- R1(D)
- Vars
- B(a);OGATE,XP(E)::R1(D),XB(a)
- S(d);N_GUARD,XR(I)::QAR1(J),XS(f)
- S(f);OGATE,XR(D)::P(C),XS(f)
- Q(j);N_GUARD::QAB1(J),XQ(j)
- B(h);OGATE,P_PINR(D)::QAR2(J),XB(h)
- S(f);N_GUARD::QAB1(J),XB(h)
- S(f);N_GUARD,S_CUTR(i)::QAB(J),XQ(j)
- Refutation
- R(i);
- Try
- S(H);XP(g)
- Threat
- R1(I)
- Vars
- S(d);N_GUARD,XR(I)::QAR1(J),XS(f)
- Q(j);N_GUARD::QAB1(J),XQ(j)
- Q(j);N_GUARD::QAB1(J)
- Refutation
- R(i);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(j);XQ(J)::R1(I)
- R(i);XS(H)::QAB1(J)
- B(h);XQ(J)::R1(I)
- Q(j);::QAB1(J)
- R(i);::QAB1(J)
- R(i);::R1(I)
- B(h);::R1(I)
- Refutation
- Q(j);XS(H)
- Try
- S(H);
- Threat
- R1(I)
- Vars
- S(d);N_GUARD,XR(I)::QAR1(J),XS(f)
- S(f);N_GUARD,XR(D)::QAB1(J),XB(h)
- Q(j);N_GUARD::QAB1(J),XQ(j)
- Q(j);N_GUARD::QAB1(J)
- Refutation
- R(i);
- Try
- Actual
- S(F);
- Threat
- R1(D)
- Vars
- B(a);OGATE,XP(E)::R1(D),XB(a)
- S(d);N_GUARD,XR(I)::QAR1(J),XS(f)
- S(f);OGATE,XR(D)::P(C),XS(f)
- Q(j);N_GUARD::QAB1(J),XQ(j)
- R(i);N_GUARD::S(F)
- R(b);N_GUARD::S(F),XP(c)
- B(h);OGATE,P_PINR(D)::QAR2(J),XB(h)
- S(f);N_GUARD::QAB1(J),XB(h)
- S(f);N_GUARD,S_CUTR(i)::QAB(J),XQ(j)
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).