MESON Chess Problem Database
Problem Display
PID: 112 (5b2/2PkBPp1/2pP2p1/K5Rp/p4QRP/rp3PPB/b7/8 w - - 0 1)
Nanning, Frederik Willem
HM., Sports Referee, 1930
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.c8Q#
- 2.c8B#
- 1...hxg4
- 2.Bxg4#
- 2.Qxg4#
- 1...Ke6
- Tries
- 1.Qc1?
- threat
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rf4#
- 1...Ke6
- 2.Rf4#
- 1...Kc8
- 2.Rb4#
- 1...Bxe7
- 2.Rd4#
- 1...hxg4
- 2.Bxg4#
- 1...Bb1
- 2.Re4#
- 1...b2
- 2.Rc4#
- 1...c5!
- threat
- 1.Qd2?
- threat
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rf4#
- 1...Ke6
- 2.Rf4#
- 1...Kc8
- 2.Rb4#
- 1...hxg4
- 2.Bxg4#
- 1...Bb1
- 2.Re4#
- 1...b2
- 2.Rc4#
- 1...c5!
- threat
- 1.Qe3?
- threat
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rf4#
- 1...Kc8
- 2.Rb4#
- 1...Bxe7
- 2.Rd4#
- 1...hxg4
- 2.Bxg4#
- 1...Bb1
- 2.Re4#
- 1...b2
- 2.Rc4#
- 1...c5!
- threat
- 1.Qe5?
- threat
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rf4#
- 1...Kc8
- 2.Rb4#
- 1...hxg4
- 2.Bxg4#
- 1...Bb1
- 2.Re4#
- 1...b2
- 2.Rc4#
- 1...c5!
- threat
- 1.Qb4?
- threat
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rf4#
- 1...Ke6
- 2.Rf4#
- 1...Kc8
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rf4#
- 1...hxg4
- 2.Bxg4#
- 2.Qxg4#
- 1...Bb1
- 2.Re4#
- 1...b2
- 2.Rc4#
- 1...c5!
- threat
- 1.Qc1?
- Keys
- 1.Qxa4!
- threat
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Re4#
- 2.Rf4#
- 1...Rxa4+
- 2.Rxa4#
- 1...Ke6
- 2.Rf4#
- 1...Kc8
- 2.Rb4#
- 1...Bxe7
- 2.Rd4#
- 1...hxg4
- 2.Bxg4#
- 1...Bb1
- 2.Re4#
- 1...b2
- 2.Rc4#
- threat
- 1.Qxa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- K(h);S_FLIGHT::P=Q
- Tries
- Try
- Q(D);
- Threat
- DUALS(6)
- Vars
- K(h);S_FLIGHT::B(C)+R(E)
- B(j);XB(K)::B(C)+R(E)
- P(e);OGATE,P_SPINP(e),XR(E)::B(C),XP(e)
- B(a);::B(C)+R(E)
- P(c);::B(C)+R(E)
- Refutation
- P(f);
- Try
- Q(D);
- Threat
- DUALS(6)
- Vars
- K(h);S_FLIGHT::B(C)+R(E)
- P(e);OGATE,P_SPINP(e),XR(E)::B(C),XP(e)
- B(a);::B(C)+R(E)
- P(c);::B(C)+R(E)
- Refutation
- P(f);
- Try
- Q(D);
- Threat
- DUALS(6)
- Vars
- K(h);S_FLIGHT::B(C)+R(E)
- B(j);XB(K)::B(C)+R(E)
- P(e);OGATE,P_SPINP(e),XR(E)::B(C),XP(e)
- B(a);::B(C)+R(E)
- P(c);::B(C)+R(E)
- Refutation
- P(f);
- Try
- Q(D);
- Threat
- DUALS(6)
- Vars
- K(h);S_FLIGHT::B(C)+R(E)
- P(e);OGATE,P_SPINP(e),XR(E)::B(C),XP(e)
- B(a);::B(C)+R(E)
- P(c);::B(C)+R(E)
- Refutation
- P(f);
- Try
- Q(D);
- Threat
- DUALS(4)
- Vars
- K(h);S_FLIGHT::B(C)+R(E)
- B(a);::B(C)+R(E)
- P(c);::B(C)+R(E)
- Refutation
- P(f);
- Try
- Actual
- Q(D);P_PINP(f),P_SPINQ(D),XP(d)
- Threat
- DUALS(5)
- Vars
- R(b);CHECK,N_SPINP(f),OGATE,XQ(D)::B(C)+R(E),XR(b)
- K(h);N_SPINP(f),S_FLIGHT::B(C)+R(E)
- B(j);XB(K)::B(C)+R(E)
- P(e);N_SPINP(f),OGATE,P_SPINP(e),XR(E)::B(C),XP(e)
- B(a);::B(C)+R(E)
- P(c);::B(C)+R(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).