MESON Chess Problem Database
Problem Display
PID: 242367 (3R4/1p4n1/RN2pp2/KPkN4/2B5/4r1pb/3p1Q2/B2n1q2 w - - 0 1)
Morra, Juan Carlos
Tijdschrift vd KNSB, 1960
#2
9 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...exd5
- 2.Rxd5#
- 1...Sb2
- Tries
- 1.Sc3?
- threat
- 2.Sca4#
- 2.Se4#
- 1...Qxf2
- 2.Sca4#
- 1...Sxf2
- 2.Sca4#
- 1...Sxc3
- 2.Qxe3#
- 1...gxf2
- 2.Sca4#
- 1...Qg2
- 2.Sca4#
- 1...Qd3
- 2.Sca4#
- 1...Qh1
- 2.Sca4#
- 1...Bg2
- 2.Sca4#
- 1...Bf5
- 2.Sca4#
- 1...Sb2
- 2.Se4#
- 2.Qxe3#
- 1...f5
- 2.Sca4#
- 1...Qxc4!
- threat
- 1.Sb4?
- threat
- 2.Bd4#
- 1...Qxc4
- 2.Sa4#
- 2.Sd7#
- 1...Qd3
- 2.Sxd3#
- 1...Sb2
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...e5
- 2.Rd5#
- 1...Sf5!
- threat
- 1.Sxf6?
- threat
- 2.Se4#
- 2.Bd4#
- 1...Qxc4
- 2.Sbd7#
- 1...Qxf2
- 2.Bd4#
- 1...Sxf2
- 2.Bd4#
- 1...gxf2
- 2.Bd4#
- 1...Qg2
- 2.Bd4#
- 1...Qh1
- 2.Bd4#
- 1...Bg2
- 2.Bd4#
- 1...Bf5
- 2.Bd4#
- 1...Sb2
- 2.Se4#
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...Sf5
- 2.Se4#
- 1...e5
- 2.Se4#
- 2.Rd5#
- 1...Qd3!
- threat
- 1.Sc7?
- threat
- 2.Bd4#
- 1...Qxc4
- 2.Sd7#
- 1...Sb2
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...Sf5
- 2.Sxe6#
- 1...e5
- 2.Rd5#
- 1...Qd3!
- threat
- 1.Bxf1?
- threat
- 2.Sa4#
- 1...Sb2
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...Bxf1!
- threat
- 1.Be2?
- threat
- 2.Sa4#
- 1...Sb2
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...Qxe2!
- threat
- 1.Bd3?
- threat
- 2.Sa4#
- 1...Sb2
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...Qxd3!
- threat
- 1.Sc3?
- Keys
- 1.Sf4!
- threat
- 2.Bd4#
- 1...Qxc4
- 2.Sd7#
- 1...Qd3
- 2.Sxd3#
- 1...Sb2
- 2.Qxe3#
- 1...Sc3
- 2.Qxe3#
- 1...Sf5
- 2.Sxe6#
- 1...e5
- 2.Rd5#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::QAB(B),XR(d)
- P(h);OGATE,XS(F)::R1(I),XP(h)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINR(d),XQ(B)::S(F)
- S(a);N_SPINR(d),XQ(B)::S(F)
- S(a);N_GUARD,XS(F)::QAB(B),XR(d)
- P(e);N_SPINR(d),XQ(B)::S(F)
- Q(b);::S(F)
- B(f);::S(F)
- P(i);::S(F)
- Refutation
- Q(b);XB(C)
- Try
- S(F);
- Threat
- B(A)
- Vars
- Q(b);N_GUARD::S(F),XQ(b)
- S(a);N_GUARD::QAB(B),XR(d)
- P(h);N_GUARD::R1(I)
- Refutation
- S(k);
- Try
- S(F);XP(i)
- Threat
- DUALS(2)
- Vars
- Q(b);SBLOCK,XB(C)::S(H)
- Q(b);N_SPINR(d),XQ(B)::B(A)
- S(a);N_SPINR(d),XQ(B)::B(A)
- P(e);N_SPINR(d),XQ(B)::B(A)
- Q(b);::B(A)
- B(f);::B(A)
- S(a);N_GUARD::QAB(B),XR(d)
- S(k);::S(F)
- Refutation
- Q(b);
- Try
- S(F);
- Threat
- B(A)
- Vars
- Q(b);SBLOCK,XB(C)::S(H)
- S(a);N_GUARD::QAB(B),XR(d)
- S(k);N_GUARD,S_CUTB(f)::S(F),XP(h)
- P(h);N_GUARD::R1(I)
- Refutation
- Q(b);
- Try
- B(C);XQ(b)
- Threat
- S(H)
- Vars
- S(a);N_GUARD::QAB(B),XR(d)
- Refutation
- B(f);XB(C)
- Try
- B(C);
- Threat
- S(H)
- Vars
- S(a);N_GUARD::QAB(B),XR(d)
- Refutation
- Q(b);XB(C)
- Try
- B(C);
- Threat
- S(H)
- Vars
- S(a);N_GUARD::QAB(B),XR(d)
- Refutation
- Q(b);XB(C)
- Try
- Actual
- S(F);
- Threat
- B(A)
- Vars
- Q(b);SBLOCK,XB(C)::S(H)
- Q(b);N_GUARD::S(F),XQ(b)
- S(a);N_GUARD::QAB(B),XR(d)
- S(k);N_GUARD,S_CUTB(f)::S(F),XP(h)
- P(h);N_GUARD::R1(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).