MESON Chess Problem Database
Problem Display
PID: 231066 (4Q1n1/6RK/6Nn/2RN4/r5kp/3bB1p1/6P1/8 w - - 0 1)
Ellerman, Arnoldo
HM., Tijdschrift vd NSB, 1927
#2
8 + 7
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kh5
- 2.Sf6#
- 1...Re4
- 2.Sge7#
- 1...Bf1
- 2.Sge7#
- 1...Be2
- 2.Sge7#
- 1...Bc4
- 2.Sge7#
- 1...Bb5
- 2.Sge7#
- 1...Ba6
- 2.Sge7#
- 1...Bxg6+
- 2.Qxg6#
- 1...Sf5
- 2.Se5#
- 1...Sf6+
- 2.Sxf6#
- 1...Se7
- 2.Sf6#
- 1...Kh5
- Tries
- 1.Bc1?
- threat
- 2.Se3#
- 1...Bxg6+
- 2.Qxg6#
- 1...Sf6+
- 2.Sxf6#
- 1...Kh5
- 2.Sf6#
- 1...Re4
- 2.Sge7#
- 1...Bf5
- 2.Qe2#
- 1...Sf5
- 2.Se5#
- 1...Kf5!
- threat
- 1.Bd2?
- threat
- 2.Se3#
- 1...Bxg6+
- 2.Qxg6#
- 1...Sf6+
- 2.Sxf6#
- 1...Kh5
- 2.Sf6#
- 1...Re4
- 2.Sge7#
- 1...Bf5
- 2.Qe2#
- 1...Sf5
- 2.Se5#
- 1...Kf5!
- threat
- 1.Bxh6?
- threat
- 2.Se3#
- 1...Bxg6+
- 2.Qxg6#
- 1...Sf6+
- 2.Sxf6#
- 1...Kh5
- 2.Sf6#
- 1...Re4
- 2.Sge7#
- 1...Bf5
- 2.Qe2#
- 1...Kf5!
- threat
- 1.Qd7+?
- 1...Kh5
- 2.Sf4#
- 2.Sf6#
- 1...Sf5
- 2.Sgf4#
- 1...Bf5!
- 1...Kh5
- 1.Qe6+?
- 1...Kh5
- 2.Sf4#
- 2.Sf6#
- 1...Sf5
- 2.Sgf4#
- 1...Bf5!
- 1...Kh5
- 1.Qc8+?
- 1...Kh5
- 2.Sf4#
- 2.Sf6#
- 1...Sf5
- 2.Sgf4#
- 1...Bf5!
- 1...Kh5
- 1.Bc1?
- Keys
- 1.Bf4!
- threat
- 2.Se3#
- 1...Bxg6+
- 2.Qxg6#
- 1...Sf6+
- 2.Sxf6#
- 1...Kf5
- 2.Sxh4#
- 1...Kh5
- 2.Sf6#
- 1...Re4
- 2.Sge7#
- 1...Bf5
- 2.Qe2#
- 1...Sf5
- 2.Se5#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- K(d);S_FLIGHT::R(C)+S(D),DCHECK
- R(c);N_PINS(E)::R(F)+S(E)
- B(a);N_PINS(E)::R(F)+S(E)
- B(a);CHECK,OGATE,P_SPINB(a),XS(E)::QAR2(H),XB(a)
- S(f);N_PINS(E),SBLOCK::R(F)+S(E),DCHECK
- S(g);CHECK,N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Tries
- Try
- B(B);
- Threat
- S(D)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(E)::QAR2(H),XB(a)
- S(g);CHECK,N_GUARD::S(D),XS(g)
- K(d);S_FLIGHT::R(C)+S(D),DCHECK
- R(c);N_PINS(E)::R(F)+S(E)
- B(a);N_GUARD,SBLOCK::QAB(H)
- S(f);N_PINS(E),SBLOCK::R(F)+S(E),DCHECK
- Refutation
- K(d);N_PINS(E),S_FLIGHT
- Try
- B(B);
- Threat
- S(D)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(E)::QAR2(H),XB(a)
- S(g);CHECK,N_GUARD::S(D),XS(g)
- K(d);S_FLIGHT::R(C)+S(D),DCHECK
- R(c);N_PINS(E)::R(F)+S(E)
- B(a);N_GUARD,SBLOCK::QAB(H)
- S(f);N_PINS(E),SBLOCK::R(F)+S(E),DCHECK
- Refutation
- K(d);N_PINS(E),S_FLIGHT
- Try
- B(B);XS(f)
- Threat
- S(D)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(E)::QAR2(H),XB(a)
- S(g);CHECK,N_GUARD::S(D),XS(g)
- K(d);S_FLIGHT::R(C)+S(D),DCHECK
- R(c);N_PINS(E)::R(F)+S(E)
- B(a);N_GUARD,SBLOCK::QAB(H)
- Refutation
- K(d);N_PINS(E),S_FLIGHT
- Try
- Q(H);CHECK
- Vars
- S(f);N_PINS(E),P_SPINS(f)::R(F)+S(E)
- Refutation
- B(a);P_SPINB(a)
- Try
- Q(H);CHECK
- Vars
- S(f);N_PINS(E),P_SPINS(f)::R(F)+S(E)
- Refutation
- B(a);P_SPINB(a)
- Try
- Q(H);CHECK
- Vars
- S(f);N_PINS(E),P_SPINS(f)::R(F)+S(E)
- Refutation
- B(a);P_SPINB(a)
- Try
- Actual
- B(B);
- Threat
- S(D)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(E)::QAR2(H),XB(a)
- S(g);CHECK,N_GUARD::S(D),XS(g)
- K(d);N_PINS(E),S_FLIGHT::S(E),XP(e)
- K(d);S_FLIGHT::R(C)+S(D),DCHECK
- R(c);N_PINS(E)::R(F)+S(E)
- B(a);N_GUARD,SBLOCK::QAB(H)
- S(f);N_PINS(E),SBLOCK::R(F)+S(E),DCHECK
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).