MESON Chess Problem Database
Problem Display
PID: 231349 (4R3/4b2K/2p3P1/3k1n2/4NP2/4p2B/4N3/Q7 w - - 0 1)
L'Hermet, Johann Georg Rudolf
Shakhmaty, 1927
#2
8 + 5
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ba3
- 2.Qa2#
- 1...Bb4
- 2.Qa2#
- 1...Bh4
- 2.Qa2#
- 1...Bc5
- 2.Qa2#
- 1...Bg5
- 2.Qa2#
- 1...Bd6
- 2.Qa2#
- 1...Bf6
- 2.Qa2#
- 1...Bd8
- 2.Qa2#
- 1...Bf8
- 2.Qa2#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Ba3
- Tries
- 1.Qc3?
- 1...Kxe4
- 2.Bg2#
- 1...Ke6
- 2.Qxc6#
- 1...Ba3
- 2.Re5#
- 2.Qb3#
- 1...Bb4
- 2.Re5#
- 2.Qb3#
- 1...Bh4
- 2.Re5#
- 2.Qb3#
- 2.Qc5#
- 1...Bc5
- 2.Re5#
- 2.Qb3#
- 2.Qxc5#
- 1...Bg5
- 2.Re5#
- 2.Qb3#
- 2.Qc5#
- 1...Bd6
- 2.Sf6#
- 2.Qb3#
- 1...Bf6
- 2.Qb3#
- 2.Qc5#
- 1...Bd8
- 2.Re5#
- 2.Qb3#
- 2.Qc5#
- 1...Bf8
- 2.Re5#
- 2.Qb3#
- 1...Sg3
- 2.Qd4#
- 2.Qd3#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 2.Qd3#
- 1...Sd6
- 2.Qd4#
- 2.Qd3#
- 1...Sh6
- 2.Qd4#
- 2.Qd3#
- 1...Sg7
- 2.Qd4#
- 2.Qd3#
- 1...c5!
- 1...Kxe4
- 1.Qd4+?
- 1...Ke6
- 2.Sc5#
- 2.Sg5#
- 2.Qd6#
- 1...Sxd4!
- 1...Ke6
- 1.Qd1+?
- 1...Kxe4
- 2.Bg2#
- 1...Ke6
- 2.Qd6#
- 1...Sd4
- 2.Qxd4#
- 1...Kc4!
- 1...Kxe4
- 1.Qa4?
- 1...Ke6
- 2.Qxc6#
- 1...Ba3
- 2.S2c3#
- 2.Re5#
- 2.Qb3#
- 1...Bb4
- 2.Qb3#
- 2.Qa2#
- 1...Bh4
- 2.S2c3#
- 2.Re5#
- 2.Qb3#
- 2.Qa2#
- 1...Bc5
- 2.S2c3#
- 2.Re5#
- 2.Qb3#
- 2.Qa2#
- 1...Bg5
- 2.S2c3#
- 2.Re5#
- 2.Qb3#
- 2.Qa2#
- 1...Bd6
- 2.S2c3#
- 2.Qb3#
- 2.Qa2#
- 1...Bf6
- 2.Qb3#
- 2.Qa2#
- 1...Bd8
- 2.S2c3#
- 2.Re5#
- 2.Qb3#
- 2.Qa2#
- 1...Bf8
- 2.S2c3#
- 2.Re5#
- 2.Qb3#
- 2.Qa2#
- 1...Sg3
- 2.S2c3#
- 2.Qd4#
- 1...Sd4
- 2.S2c3#
- 2.Qxd4#
- 1...Sh4
- 2.S2c3#
- 2.Qd4#
- 1...Sd6
- 2.S2c3#
- 2.Qd4#
- 1...Sh6
- 2.S2c3#
- 2.Qd4#
- 1...Sg7
- 2.S2c3#
- 2.Qd4#
- 1...c5!
- 1...Ke6
- 1.Qc3?
- Keys
- 1.Qa6!
- 1...Kxe4
- 2.Bg2#
- 1...Ke6
- 2.Qxc6#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 2.Qa2#
- 1...Bh4
- 2.Re5#
- 2.Qa2#
- 1...Bc5
- 2.Re5#
- 2.Qa2#
- 1...Bg5
- 2.Re5#
- 2.Qa2#
- 1...Bd6
- 2.Qa2#
- 1...Bf6
- 2.Qa2#
- 1...Bd8
- 2.Re5#
- 2.Qa2#
- 1...Bf8
- 2.Re5#
- 2.Qa2#
- 1...Sg3
- 2.Qd3#
- 1...Sd4
- 2.S2c3#
- 1...Sh4
- 2.Qd3#
- 1...Sd6
- 2.Qd3#
- 1...Sh6
- 2.Qd3#
- 1...Sg7
- 2.Qd3#
- 1...c5
- 2.S4c3#
- 1...Kxe4
- 1.Qa6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- B(e);::QAB(A)
- S(c);N_GUARD::QAR1(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- Tries
- Try
- Q(A);
- Vars
- K(b);OGATEB,P_SPINB(e),S_FLIGHT,XS(D)::B(C)
- K(b);P_SPINB(e),P_SPINS(c),S_FLIGHT::QAR2(A),XP(d)
- S(c);N_GUARD::QAR1(A),XS(c)
- Refutation
- P(d);
- Try
- Q(A);CHECK
- Refutation
- S(c);XQ(A)
- Try
- Q(A);CHECK
- Vars
- K(b);P_SPINB(e),S_FLIGHT,XS(D)::B(C)
- K(b);OGATE,P_SPINB(e),P_SPINS(c),S_FLIGHT::QAR1(A)
- S(c);N_GUARD,P_SPINS(c)::QAR1(A),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);
- Vars
- K(b);P_SPINB(e),P_SPINS(c),S_FLIGHT::QAR2(A),XP(d)
- Refutation
- P(d);
- Try
- Actual
- Q(A);
- Vars
- K(b);OGATEB,P_SPINB(e),S_FLIGHT,XS(D)::B(C)
- K(b);P_SPINB(e),P_SPINP(d),P_SPINS(c),S_FLIGHT::QAR2(A),XP(d)
- B(e);OGATE::R1(H)
- B(e);::QAB(A)
- S(c);N_GUARD::QAR2(A)
- S(c);SBLOCK::S(B)
- P(d);SBLOCK::S(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).