MESON Chess Problem Database
Problem Display
PID: 201459 (5n2/4R1Nb/p6p/K2k3r/Q2B1P2/pNp2p2/6r1/3R3q w - - 0 1)
Mari, Alberto
L'Alfiere di Re, 1922
#2
8 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kd6+
- 2.Bc5#
- 1...Rg6
- 2.Bg1#
- 1...Kd6+
- Tries
- 1.Bg1+?
- 1...Bd3
- 2.Rxd3#
- 1...Rd2!
- 1...Bd3
- 1.Bf2+?
- 1...Bd3
- 2.Rxd3#
- 1...Qxd1!
- 1...Bd3
- 1.Re5+?
- 1...Kd6
- 2.Se8#
- 1...Rxe5!
- 1...Kd6
- 1.Rd7+?
- 1...Ke4+
- 2.Bc5#
- 1...Sxd7!
- 1...Ke4+
- 1.Qb5+?
- 1...Kd6
- 2.Bc5#
- 1...axb5!
- 1...Kd6
- 1.Bg1+?
- Keys
- 1.Rc7!
- threat
- 2.Qc6#
- 1...Ke4+
- 2.Bc5#
- 1...Kd6+
- 2.Be5#
- 1...Rg6
- 2.Bg1#
- threat
- 1.Rc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(f);CHECK,P-FLIGHT::R(A)+B(D),DCHECK
- R(b);N_GUARD,S_CUTB(j)::R(A)+B(D)
- Tries
- Try
- B(D);CHECK
- Vars
- B(j);N_GUARD,P_SPINB(j)::R(A),XB(j)
- Refutation
- R(b);P_SPINR(b)
- Try
- B(D);CHECK
- Vars
- B(j);N_GUARD,P_SPINB(j)::R(A),XB(j)
- Refutation
- Q(a);XR(A)
- Try
- R(G);CHECK
- Vars
- K(f);P-FLIGHT,P_PINR(G)::S(H)
- Refutation
- R(g);XR(G)
- Try
- R(G);CHECK
- Vars
- K(f);CHECK,S_FLIGHT::QAR(C)+B(D)
- Refutation
- S(k);XR(G)
- Try
- Q(C);CHECK
- Vars
- K(f);P-FLIGHT,P_PINQ(C)::R(A)+B(D),DCHECK
- Refutation
- P(h);XQ(C)
- Try
- Actual
- R(G);
- Threat
- QAB1(C)
- Vars
- K(f);CHECK,S_FLIGHT::QAR(C)+B(D)
- K(f);CHECK,P-FLIGHT::R(A)+B(D),DCHECK
- R(b);N_GUARD,S_CUTB(j)::R(A)+B(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).