MESON Chess Problem Database
Problem Display
PID: 204412 (2Q4q/4p1p1/4R2P/3p1k1N/1pP3Np/7B/1rb2P1K/1rB5 w - - 0 1)
Weenink, Henri Gerard Maria
L'Alfiere di Re, 1925
#2
10 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxh6
- 2.Sxh6#
- 1...Qxc8
- 2.Sxg7#
- 1...Qd8
- 2.Sxg7#
- 1...Qe8
- 2.Sxg7#
- 1...Be4
- 2.Se5#
- 2.Rf6#
- 1...gxh6
- 2.Sxh6#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 2.Re5#
- 1...Qxh6
- Tries
- 1.Re1+?
- 1...Qxc8
- 2.Se5#
- 1...e6
- 2.Se5#
- 2.Qxe6#
- 1...Kg6!
- 1...Qxc8
- 1.Re2+?
- 1...Qxc8
- 2.Se5#
- 1...e6
- 2.Se5#
- 2.Qxe6#
- 1...Kg6!
- 1...Qxc8
- 1.Qa6?
- threat
- 2.Re5#
- 1...gxh6
- 2.Sxh6#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 1...Qb8+!
- threat
- 1.Qb7?
- threat
- 2.Qxd5#
- 1...Kxe6
- 2.Qxd5#
- 1...dxc4
- 2.Se5#
- 2.Qd5#
- 1...gxh6
- 2.Sxh6#
- 1...Qa8
- 2.Sxg7#
- 1...Qd8
- 2.Sxg7#
- 1...Be4
- 2.Se5#
- 1...d4
- 2.Se5#
- 2.Qd5#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 1...Qb8+!
- threat
- 1.Qd7?
- threat
- 2.Qxd5#
- 1...dxc4
- 2.Qd5#
- 1...gxh6
- 2.Sxh6#
- 1...Qa8
- 2.Sxg7#
- 1...Qd8
- 2.Sxg7#
- 1...Be4
- 2.Se5#
- 2.Rf6#
- 1...d4
- 2.Qd5#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 2.Re5#
- 2.Rxe7#
- 1...Qb8+!
- threat
- 1.Qc5?
- threat
- 2.Qxd5#
- 1...Kxe6
- 2.Qxd5#
- 1...gxh6
- 2.Sxh6#
- 1...Qa8
- 2.Sxg7#
- 1...Qd8
- 2.Sxg7#
- 1...Be4
- 2.Se5#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 1...Qb8+!
- threat
- 1.Qc6?
- threat
- 2.Re5#
- 2.Qxd5#
- 1...dxc4
- 2.Se5#
- 2.Re5#
- 2.Qd5#
- 1...gxh6
- 2.Sxh6#
- 1...Qa8
- 2.Sxg7#
- 2.Re5#
- 1...Qd8
- 2.Sxg7#
- 2.Re5#
- 1...Be4
- 2.Se5#
- 2.Re5#
- 1...d4
- 2.Se5#
- 2.Re5#
- 2.Qd5#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 1...Qb8+!
- threat
- 1.Qc7?
- threat
- 2.Qe5#
- 1...gxh6
- 2.Sxh6#
- 1...Qb8
- 2.Sxg7#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 1...Kxe6!
- threat
- 1.Qa8?
- threat
- 2.Qxd5#
- 1...Kxe6
- 2.Qxd5#
- 1...Qxa8
- 2.Sxg7#
- 1...dxc4
- 2.Se5#
- 2.Qd5#
- 1...gxh6
- 2.Sxh6#
- 1...Qd8
- 2.Sxg7#
- 1...Be4
- 2.Se5#
- 1...d4
- 2.Se5#
- 2.Qd5#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- 1...Qb8+!
- threat
- 1.Qe8?
- threat
- 2.Sgf6#
- 2.Re5#
- 2.Qg6#
- 2.Qf7#
- 1...Qxh6
- 2.Sgf6#
- 2.Sxh6#
- 2.Re5#
- 1...Qxe8
- 2.Sxg7#
- 1...Rxc1
- 2.Re5#
- 2.Qg6#
- 1...gxh6
- 2.Sgf6#
- 2.Sxh6#
- 2.Qg6#
- 1...Qh7
- 2.Sgf6#
- 2.Re5#
- 2.Qf7#
- 1...Qf8
- 2.Sgf6#
- 2.Re5#
- 2.Qg6#
- 1...Qg8
- 2.Sgf6#
- 2.Re5#
- 2.Qg6#
- 1...Rb3
- 2.Re5#
- 2.Qg6#
- 2.Qf7#
- 1...Bd1
- 2.Re5#
- 2.Qg6#
- 2.Qf7#
- 1...g5
- 2.Se3#
- 2.Qg6#
- 1...g6
- 2.Sgf6#
- 2.Qxg6#
- 1...Kxe6!
- threat
- 1.f3?
- threat
- 2.Sf2#
- 2.Se5#
- 2.Rf6#
- 1...Bd1+
- 2.Sf2#
- 1...Bb3+
- 2.Sf2#
- 1...Bd3+
- 2.Sf2#
- 1...Ba4+
- 2.Sf2#
- 1...Be4+
- 2.Sf2#
- 1...Qxc8
- 2.Sf2#
- 2.Se5#
- 2.Sxg7#
- 1...g5
- 2.Se3#
- 2.Rf6#
- 1...Rxc1!
- threat
- 1.f4?
- threat
- 2.Sf2#
- 2.Se3#
- 1...Bb3+
- 2.Sf2#
- 1...Bd3+
- 2.Sf2#
- 1...Ba4+
- 2.Sf2#
- 1...Be4+
- 2.Sf2#
- 1...Rb3
- 2.Se3#
- 1...g5
- 2.Se3#
- 1...Bd1+!
- threat
- 1.hxg7?
- threat
- 2.Sh6#
- 1...Qh6
- 2.Sxh6#
- 1...Rxc1!
- threat
- 1.Re1+?
- Keys
- 1.Qd8!
- threat
- 2.Qxd5#
- 1...Kxe6
- 2.Qxd5#
- 1...Qxd8
- 2.Sxg7#
- 1...dxc4
- 2.Qd5#
- 1...gxh6
- 2.Sxh6#
- 1...Be4
- 2.Se5#
- 1...d4
- 2.Qd5#
- 1...g5
- 2.Se3#
- 1...g6
- 2.Sgf6#
- threat
- 1.Qd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- Q(j);XP(I)::B(D)+S(F),DCHECK,XQ(j)
- Q(j);N_GUARD,XQ(J)::S(G),XP(i)
- Q(j);N_GUARD::S(G),XP(i)
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- Tries
- Try
- R(H);CHECK
- Vars
- Q(j);XQ(J)::B(D)+S(F)
- Refutation
- K(g);S_FLIGHT
- Try
- R(H);CHECK
- Vars
- Q(j);XQ(J)::B(D)+S(F)
- Refutation
- K(g);S_FLIGHT
- Try
- Q(J);
- Threat
- R1(H)
- Vars
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- P(i);SBLOCK::B(D)+S(F)
- Refutation
- Q(j);CHECK
- Try
- Q(J);
- Threat
- QAR2(J),XP(f)
- Vars
- K(g);S_FLIGHT,XR(H)::QAB1(J),XP(f)
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- Q(j);N_GUARD::S(G),XP(i)
- B(c);P_PINP(B),SBLOCK::B(D)+S(F)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- P(i);SBLOCK::B(D)+S(F)
- Refutation
- Q(j);CHECK
- Try
- Q(J);
- Threat
- QAR2(J),XP(f)
- Vars
- P(f);XP(E)::QAR2(J)
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- Q(j);N_GUARD::S(G),XP(i)
- P(f);::QAR2(J)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- Refutation
- Q(j);CHECK
- Try
- Q(J);P_PINP(f)
- Threat
- QAR2(J),XP(f)
- Vars
- K(g);N_SPINP(f),S_FLIGHT,XR(H)::QAB1(J),XP(f)
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- Q(j);N_GUARD::S(G),XP(i)
- B(c);P_PINP(B),SBLOCK::B(D)+S(F)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- P(i);SBLOCK::B(D)+S(F)
- Refutation
- Q(j);CHECK
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- P(i);SBLOCK::B(D)+S(F)
- Refutation
- Q(j);CHECK
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- Q(j);N_GUARD,P_PINQ(J)::S(G),XP(i)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- P(i);SBLOCK::B(D)+S(F)
- Refutation
- K(g);S_FLIGHT,XR(H)
- Try
- Q(J);
- Threat
- QAR2(J),XP(f)
- Vars
- K(g);S_FLIGHT,XR(H)::QAB1(J),XP(f)
- Q(j);N_GUARD,XQ(J)::S(G),XP(i)
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- Q(j);N_GUARD::S(G),XP(i)
- B(c);P_PINP(B),SBLOCK::B(D)+S(F)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- P(i);SBLOCK::B(D)+S(F)
- Refutation
- Q(j);CHECK
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- Q(j);N_GUARD,XQ(J)::S(G),XP(i)
- Refutation
- K(g);P_SPINP(h),S_FLIGHT,XR(H)
- Try
- P(B);
- Threat
- DUALS(3)
- Vars
- B(c);CHECK::B(D)+S(F)
- Refutation
- R(a);XB(A)
- Try
- P(B);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK::B(D)+S(F)
- R(b);::B(D)+S(F),DCHECK
- P(i);::B(D)+S(F),DCHECK
- Refutation
- B(c);CHECK
- Try
- P(I);XP(i)
- Threat
- B(D)+S(F),DCHECK
- Vars
- Q(j);::B(D)+S(F),DCHECK,XQ(j)
- Refutation
- R(a);XB(A)
- Try
- Actual
- Q(J);
- Threat
- QAR2(J),XP(f)
- Vars
- K(g);S_FLIGHT,XR(H)::QAB1(J),XP(f)
- Q(j);N_GUARD,XQ(J)::S(G),XP(i)
- P(f);XP(E)::QAR2(J)
- P(i);XP(I)::B(D)+S(F),DCHECK,XP(i)
- B(c);P_PINP(B),SBLOCK::B(D)+S(F)
- P(f);::QAR2(J)
- P(i);SBLOCK::B(D)+S(F),DCHECK
- P(i);SBLOCK::B(D)+S(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).