MESON Chess Problem Database
Problem Display
PID: 250104 (2QbK1R1/3NP3/1p1R4/5k1N/b2Pr1nP/8/7P/1Bq5 w - - 0 1)
Mari, Alberto
Shakhmatny Listok, 1927
#2
11 + 7
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Rg5#
- 1...Qa3
- 2.Rg5#
- 1...Qf4
- 2.Sg7#
- 1...Qg5
- 2.Rxg5#
- 1...Qxb1
- 2.Rg5#
- 1...Qd1
- 2.Rg5#
- 1...Qe1
- 2.Rg5#
- 1...Qf1
- 2.Rg5#
- 1...Qg1
- 2.Rg5#
- 1...Qh1
- 2.Rg5#
- 1...Qc2
- 2.Rg5#
- 1...Qc3
- 2.Rg5#
- 1...Qc4
- 2.Rg5#
- 1...Qc5
- 2.Rg5#
- 1...Qc6
- 2.Rg5#
- 1...Qc7
- 2.Rg5#
- 1...Qxc8
- 2.Rg5#
- 1...Bd1
- 2.Sc5#
- 1...Bc2
- 2.Se5#
- 1...Bxd7+
- 2.Qxd7#
- 1...Sf2
- 2.Rf6#
- 1...Sxh2
- 2.Rf6#
- 1...Se3
- 2.Rf6#
- 2.Rg5#
- 1...Se5
- 2.Rf6#
- 1...Sf6+
- 2.Rxf6#
- 1...Sh6
- 2.Rf6#
- 1...b5
- 2.Sc5#
- 1...Qb2
- Tries
- 1.Rd5+?
- 1...Se5
- 2.Rxe5#
- 1...Ke6!
- 1...Se5
- 1.Qxc1?
- threat
- 2.Sg3#
- 2.Sg7#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 1...Sf6+
- 2.Rxf6#
- 1...Bxe7
- 2.Sg3#
- 2.Sg7#
- 2.Qf4#
- 1...Sxh2
- 2.Sg3#
- 2.Rf6#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 1...Bc2
- 2.Sg3#
- 2.Sg7#
- 2.Rg5#
- 2.Qg5#
- 1...Sf2
- 2.Sg3#
- 2.Rf6#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 1...Se3
- 2.Rf6#
- 2.Rg5#
- 1...Se5
- 2.Sg3#
- 2.Rf6#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 1...Sh6
- 2.Sg3#
- 2.Rf6#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 2.Qf1#
- 1...Bxd7+!
- threat
- 1.Qc5+?
- 1...Qxc5
- 2.Rg5#
- 1...Se5
- 2.Rf6#
- 2.Qxe5#
- 1...bxc5!
- 1...Qxc5
- 1.Rd5+?
- Keys
- 1.h3!
- threat
- 2.hxg4#
- 1...Bxd7+
- 2.Qxd7#
- 1...Sf6+
- 2.Rxf6#
- 1...Qxb1
- 2.Rg5#
- 1...Qf4
- 2.Sg7#
- 1...Qg5
- 2.Rxg5#
- 1...Qd1
- 2.Rg5#
- 1...Qg1
- 2.Rg5#
- 1...Qc2
- 2.Rg5#
- 1...Bd1
- 2.Sc5#
- 1...Bc2
- 2.Se5#
- 1...Sf2
- 2.Rf6#
- 2.Rf8#
- 1...Sh2
- 2.Rf6#
- 2.Rf8#
- 1...Se3
- 2.Rf6#
- 2.Rg5#
- 2.Rf8#
- 1...Se5
- 2.Rf6#
- 1...Sh6
- 2.Rf6#
- threat
- 1.h3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::R1(K)
- Q(a);SBLOCK::S(E)
- Q(a);N_GUARD::R1(K),XQ(a)
- Q(a);N_GUARD,N_SPINR(c),XB(A)::R1(K)
- Q(a);N_GUARD,N_SPINR(c)::R1(K)
- Q(a);N_GUARD,XQ(I)::R1(K)
- B(b);N_PINS(G)::QAB(I)+S(G)
- B(b);N_PINS(G),N_SPINR(c)::QAB(I)+S(G)
- B(b);CHECK,OGATE,P_SPINB(b),XS(G)::QAB(I),XB(b)
- S(d);N_GUARD::R1(F)
- S(d);N_GUARD,XP(B)::R1(F)
- S(d);N_GUARD,N_PINP(H)::R1(F)
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- P(f);N_PINS(G)::QAB(I)+S(G)
- Tries
- Try
- R(F);CHECK
- Vars
- S(d);N_GUARD,N_PINP(H),P_SPINS(d)::R1(F),XS(d)
- Refutation
- K(e);N_PINP(H),N_SPINR(c),S_FLIGHT
- Try
- Q(I);XQ(a)
- Threat
- DUALS(5)
- Vars
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- Refutation
- B(b);CHECK,XS(G)
- Try
- Q(I);CHECK
- Vars
- Q(a);XQ(I)::R1(K)
- Refutation
- P(f);XQ(I)
- Try
- Actual
- P(B);
- Threat
- P(B),XS(d)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XS(G)::QAB(I),XB(b)
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- Q(a);N_GUARD,N_SPINR(c),XB(A)::R1(K)
- Q(a);SBLOCK::S(E)
- Q(a);N_GUARD::R1(K),XQ(a)
- Q(a);N_GUARD::R1(K)
- Q(a);N_GUARD,N_SPINR(c)::R1(K)
- B(b);N_PINS(G)::QAB(I)+S(G)
- B(b);N_PINS(G),N_SPINR(c)::QAB(I)+S(G)
- S(d);N_GUARD,N_PINP(H)::R1(F)
- S(d);N_GUARD::R1(F)
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).