MESON Chess Problem Database
Problem Display
PID: 252583 (8/K2p4/2RP4/1Qpk1P2/n1R1pB2/2p5/2P1N1p1/6bq w - - 0 1)
Ivanov, G
64 Shakhmatnoe obozrenie, 2021
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Bh2
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Sb2
- 2.Sxc3#
- 1...Sb6
- 2.Sxc3#
- 1...e3
- 2.Rd4#
- 1...Bh2
- Tries
- 1.Rxe4?
- threat
- 2.Re5#
- 1...Kxe4
- 2.Qd3#
- 1...dxc6
- 2.Qc4#
- 1...Bd4
- 2.Rxd4#
- 1...Qh8!
- threat
- 1.R6xc5+?
- 1...Sxc5
- 2.Sxc3#
- 1...Bxc5+!
- 1...Sxc5
- 1.Qb3?
- threat
- 2.R4xc5#
- 1...Kxc6
- 2.Qb7#
- 1...dxc6
- 2.Rd4#
- 1...e3!
- threat
- 1.Rxe4?
- Keys
- 1.Qb7!
- threat
- 2.R6xc5#
- 1...Kxc4
- 2.Qb3#
- 1...dxc6
- 2.Qf7#
- threat
- 1.Qb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- B(a);N_GUARD::R1(C)
- B(a);N_GUARD::R1(C),XB(a)
- S(e);N_GUARD::S(B),XP(d)
- P(f);S_CUTB(a)::R1(C)
- Tries
- Try
- R(C);XP(f)
- Threat
- R1(C)
- Vars
- K(h);N_GUARD,N_SPINP(g),S_CUTB(a),S_FLIGHT,XR(C)::QAB1(E)
- P(i);SBLOCK,XR(G)::QAB1(E)
- B(a);N_GUARD::R1(C),XB(a)
- Refutation
- Q(b);
- Try
- R(G);CHECK,P_SPINR(G),XP(g)
- Vars
- S(e);P_SPINS(e),XR(G)::S(B),XP(d)
- Refutation
- B(a);CHECK,P_SPINB(a),XR(G)
- Try
- Q(E);N_PINP(g)
- Threat
- QAB(E)+R(C),DCHECK,XP(g)
- Vars
- K(h);OGATEB,P_SPINP(g),S_FLIGHT,XR(G)::QAB1(E)
- P(i);SBLOCK,XR(G)::QAB(E)+R(C),DCHECK
- Refutation
- P(f);
- Try
- Actual
- Q(E);N_PINP(g)
- Threat
- QAB(E)+R(G),DCHECK,XP(g)
- Vars
- K(h);OGATEB,P_SPINP(g),S_FLIGHT,XR(C)::QAB1(E)
- P(i);OGATE,P_SPINP(i),SBLOCK,XR(G)::QAB(E)
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).