MESON Chess Problem Database
Problem Display
PID: 242334 (8/1p6/3n2B1/Rn6/1PkP4/5Q2/bRN5/K7 w - - 0 1)
Morra, Juan Carlos
Tijdschrift vd KNSB, 1956
#2
8 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...Sa3
- 2.Rc5#
- 2.Qd3#
- 1...Sc3
- 2.Bd3#
- 2.Rc5#
- 2.Qd3#
- 1...Sxd4
- 2.Sa3#
- 2.Rc5#
- 2.Qd3#
- 1...Sa7
- 2.Rc5#
- 2.Qd3#
- 1...Sc7
- 2.Rc5#
- 2.Qd3#
- 1...Se4
- 2.Bf7#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sc8
- 2.Bf7#
- 1...Se8
- 2.Bf7#
- 1...b6
- 2.Qc6#
- 1...Bb1
- Tries
- 1.Kxa2?
- threat
- 2.Qb3#
- 1...Sxd4
- 2.Sa3#
- 2.Rc5#
- 2.Qd3#
- 1...Sc3+!
- threat
- 1.Sa3+?
- 1...Sxa3
- 2.Qd3#
- 1...Kxd4!
- 1...Sxa3
- 1.Be4?
- threat
- 2.Bd5#
- 2.Qd3#
- 1...Sc3
- 2.Bd3#
- 2.Rc5#
- 2.Qd3#
- 1...Sc7
- 2.Rc5#
- 2.Qd3#
- 1...Sxe4!
- threat
- 1.Bf5?
- threat
- 2.Be6#
- 1...Sxd4
- 2.Sa3#
- 2.Rc5#
- 2.Qd3#
- 1...Sc3
- 2.Bd3#
- 2.Rc5#
- 2.Qd3#
- 1...Sc7
- 2.Rc5#
- 2.Qd3#
- 1...Sxf5!
- threat
- 1.Bh5?
- 1...Sxd4
- 2.Sa3#
- 2.Rc5#
- 1...Se4
- 2.Bf7#
- 1...Bb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...Sa3
- 2.Rc5#
- 1...Sc3
- 2.Rc5#
- 1...Sa7
- 2.Rc5#
- 1...Sc7
- 2.Rc5#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sc8
- 2.Bf7#
- 1...Se8
- 2.Bf7#
- 1...b6!
- 1...Sxd4
- 1.Bh7?
- 1...Sxd4
- 2.Sa3#
- 2.Rc5#
- 2.Qd3#
- 1...Se4
- 2.Bg8#
- 1...Bb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...Sa3
- 2.Rc5#
- 2.Qd3#
- 1...Sc3
- 2.Bd3#
- 2.Rc5#
- 2.Qd3#
- 1...Sa7
- 2.Rc5#
- 2.Qd3#
- 1...Sc7
- 2.Rc5#
- 2.Qd3#
- 1...Sf5
- 2.Bg8#
- 1...Sc8
- 2.Bg8#
- 1...Se8
- 2.Bg8#
- 1...b6
- 2.Qc6#
- 1...Sf7!
- 1...Sxd4
- 1.Rb1?
- 1...Sxd4
- 2.Sa3#
- 2.Rc5#
- 2.Qd3#
- 1...Se4
- 2.Bf7#
- 1...b6
- 2.Qc6#
- 1...Bb3
- 2.Qxb3#
- 1...Sa3
- 2.Rc5#
- 2.Qd3#
- 1...Sc3
- 2.Bd3#
- 2.Rc5#
- 2.Qd3#
- 1...Sa7
- 2.Rc5#
- 2.Qd3#
- 1...Sc7
- 2.Rc5#
- 2.Qd3#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sc8
- 2.Bf7#
- 1...Se8
- 2.Bf7#
- 1...Bxb1!
- 1...Sxd4
- 1.Ra3?
- threat
- 2.Bd3#
- 1...Se4
- 2.Bf7#
- 2.Qf7#
- 1...Bb3
- 2.Qxb3#
- 1...Sf5
- 2.Bf7#
- 1...Sxa3!
- threat
- 1.Qe2+?
- 1...Kc3
- 2.Qd3#
- 1...Kd5!
- 1...Kc3
- 1.Qf1+?
- 1...Kc3
- 2.Qd3#
- 1...Kd5!
- 1...Kc3
- 1.Kxa2?
- Keys
- 1.Ra4!
- 1...Sxd4
- 2.Sa3#
- 1...Sa3
- 2.b5#
- 1...Sc3
- 2.Bd3#
- 1...Sa7
- 2.b5#
- 1...Sc7
- 2.b5#
- 1...Se4
- 2.Bf7#
- 1...b6
- 2.Qc6#
- 1...Bb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...Sf5
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sc8
- 2.Bf7#
- 1...Se8
- 2.Bf7#
- 1...Sxd4
- 1.Ra4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- S(d);N_GUARD::B(H)
- S(d);N_GUARD::B(H),XS(d)
- P(e);N_GUARD::QAR2(D)
- Tries
- Try
- K(A);P-FLIGHT,XB(a)
- Threat
- QAB1(D)
- Refutation
- S(c);CHECK
- Try
- S(C);CHECK
- Vars
- S(c);XS(C)::QAB1(D)
- Refutation
- K(b);P-FLIGHT,XP(F)
- Try
- B(H);
- Threat
- DUALS(2)
- Refutation
- S(d);XB(H)
- Try
- B(H);
- Threat
- B(H)
- Refutation
- S(d);XB(H)
- Try
- B(H);
- Vars
- S(d);N_GUARD::B(H)
- B(a);N_GUARD::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- S(c);OGATE::R1(G)
- S(d);N_GUARD::B(H),XS(d)
- Refutation
- P(e);
- Try
- B(H);
- Vars
- S(d);N_GUARD::B(H)
- B(a);N_GUARD::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- P(e);N_GUARD::QAR2(D)
- Refutation
- S(d);
- Try
- R(B);
- Vars
- S(d);N_GUARD::B(H)
- P(e);N_GUARD::QAR2(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- S(d);N_GUARD::B(H),XS(d)
- Refutation
- B(a);XR(B)
- Try
- R(G);
- Threat
- B(H)
- Vars
- B(a);N_GUARD::QAB1(D),XB(a)
- S(d);N_GUARD::B(H)
- Refutation
- S(c);XR(G)
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D)
- Refutation
- K(b);P_SPINS(c),S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D)
- Refutation
- K(b);P_SPINS(c),S_FLIGHT
- Try
- Actual
- R(G);
- Vars
- S(c);N_GUARD,SBLOCK,XP(F)::S(C)
- S(c);OGATE::R(G)+P(E)
- S(c);SBLOCK::B(H)
- S(d);N_GUARD::B(H)
- P(e);N_GUARD::QAR2(D)
- B(a);N_GUARD::QAB1(D)
- B(a);N_GUARD::QAB1(D),XB(a)
- S(d);N_GUARD::B(H),XS(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).