MESON Chess Problem Database
Problem Display
PID: 221926 (4R3/5p2/1p1P1pbB/5k1r/3p3p/2qP1N1K/1R1P1N2/b4Q2 w - - 0 1)
Jensen, V Skovlund
Stella Polaris, 1967
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxd2
- 2.Sxd4#
- 2.Rb5#
- 1...Qa5
- 2.Sxd4#
- 1...Qc1
- 2.Sxd4#
- 1...Qc2
- 2.Sxd4#
- 1...Qa3
- 2.Sxd4#
- 1...Qb3
- 2.Sxd4#
- 1...Qxd3
- 2.Qxd3#
- 1...Qc6
- 2.Sxd4#
- 1...Qc7
- 2.Sxd4#
- 1...Qc8
- 2.Sxd4#
- 1...Qxd2
- Tries
- 1.Sd1?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Se5#
- 2.Sg5#
- 1...Qxd2
- 2.Sxd2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Rb5#
- 1...Qxd3
- 2.Qxd3#
- 1...Rg5
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Se5#
- 2.Sxg5#
- 1...Bh7
- 2.Sxh4#
- 2.Se5#
- 1...Qc6
- 2.Sxd4#
- 2.Sxh4#
- 1...Rxh6!
- threat
- 1.Sh1?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Se5#
- 2.Sg5#
- 1...Qxd2
- 2.Sxd2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Rb5#
- 1...Qxd3
- 2.Qxd3#
- 1...Rg5
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Se5#
- 2.Sxg5#
- 1...Bh7
- 2.Sxh4#
- 2.Se5#
- 1...Qc1
- 2.Se1#
- 2.Sxd4#
- 2.Sxh4#
- 1...Qc6
- 2.Sxd4#
- 2.Sxh4#
- 1...Rxh6!
- threat
- 1.Se4?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Se5#
- 2.Sfg5#
- 1...Qxd2
- 2.Sfxd2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Rb5#
- 1...Rg5
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Se5#
- 2.Sfxg5#
- 1...Bh7
- 2.Sxh4#
- 2.Se5#
- 1...Qc1
- 2.Se1#
- 2.Sxd4#
- 2.Sxh4#
- 1...Qxd3!
- threat
- 1.Sg4?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sfh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Sfe5#
- 2.Sg5#
- 1...Qxd2
- 2.Sxd2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Rb5#
- 1...Qxd3
- 2.Qxd3#
- 1...Rg5
- 2.Se1#
- 2.Sg1#
- 2.Sfh2#
- 2.Sxd4#
- 2.Sxh4#
- 2.Sfe5#
- 2.Sxg5#
- 1...Bh7
- 2.Sxh4#
- 2.Sfe5#
- 1...Qc1
- 2.Se1#
- 2.Sxd4#
- 2.Sxh4#
- 1...Qc6
- 2.Sxd4#
- 2.Sxh4#
- 1...Rxh6!
- threat
- 1.Se1?
- threat
- 2.Sd1#
- 2.Sh1#
- 2.Se4#
- 2.Sg4#
- 1...Qxd3+
- 2.Sfxd3#
- 2.Qxd3#
- 1...Qxd2
- 2.Rb5#
- 1...Rxh6
- 2.Se4#
- 1...Qc6
- 2.Se4#
- 1...Bh7!
- threat
- 1.Sg1?
- threat
- 2.Sd1#
- 2.Sh1#
- 2.Se4#
- 2.Sg4#
- 1...Qxd3+
- 2.Sxd3#
- 2.Qxd3#
- 1...Qxd2
- 2.Rb5#
- 1...Rxh6
- 2.Se4#
- 1...Qc1
- 2.Sd1#
- 1...Qc6
- 2.Se4#
- 1...Bh7!
- threat
- 1.Sh2?
- threat
- 2.Sd1#
- 2.Sh1#
- 2.Se4#
- 2.Sfg4#
- 1...Qxd3+
- 2.Sxd3#
- 2.Qxd3#
- 1...Qxd2
- 2.Rb5#
- 1...Rxh6
- 2.Se4#
- 1...Qc1
- 2.Sd1#
- 1...Qc6
- 2.Se4#
- 1...Bh7!
- threat
- 1.Se5?
- threat
- 2.Sd1#
- 2.Sh1#
- 2.Se4#
- 2.Sfg4#
- 1...Qxd3+
- 2.Qxd3#
- 1...Rxh6
- 2.Se4#
- 1...Qc1
- 2.Sd1#
- 1...Qc6
- 2.Se4#
- 1...Qxd2!
- threat
- 1.Qe1?
- threat
- 2.Qe4#
- 1...Qc6
- 2.Sxd4#
- 1...Qxd3!
- threat
- 1.Sd1?
- Keys
- 1.Qe2!
- threat
- 2.Qe4#
- 1...Qxd3
- 2.Qxd3#
- 1...Qc6
- 2.Sxd4#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD::S(F),XP(c)
- Q(b);OGATE,P_PINS(F),XP(E)::QAB(A),XQ(b)
- Tries
- Try
- S(D);
- Threat
- DUALS(7)
- Vars
- Q(b);OGATE,P_PINS(F),XP(E)::QAB(A),XQ(b)
- Refutation
- R(f);XB(I)
- Try
- S(D);
- Threat
- DUALS(7)
- Vars
- Q(b);OGATE,P_PINS(F),XP(E)::QAB(A),XQ(b)
- Refutation
- R(f);XB(I)
- Try
- S(D);
- Threat
- DUALS(7)
- Refutation
- Q(b);P_PINS(F),XP(E)
- Try
- S(D);
- Threat
- DUALS(7)
- Vars
- Q(b);OGATE,P_PINS(F),XP(E)::QAB(A),XQ(b)
- Refutation
- R(f);XB(I)
- Try
- S(F);P_SPINP(E)
- Threat
- DUALS(4)
- Vars
- Q(b);N_GUARD,N_PINP(E),XP(C)::R(B)
- R(f);XB(I)::QAR(A)+S(D)
- Q(b);N_PINP(E)::QAR(A)+S(D)
- Refutation
- B(i);
- Try
- S(F);P_SPINP(E)
- Threat
- DUALS(4)
- Vars
- Q(b);N_GUARD,N_PINP(E),XP(C)::R(B)
- R(f);XB(I)::QAR(A)+S(D)
- Q(b);N_PINP(E)::QAR(A)+S(D)
- Refutation
- B(i);
- Try
- S(F);P_SPINP(E)
- Threat
- DUALS(4)
- Vars
- Q(b);N_GUARD,N_PINP(E),XP(C)::R(B)
- R(f);XB(I)::QAR(A)+S(D)
- Q(b);N_PINP(E)::QAR(A)+S(D)
- Refutation
- B(i);
- Try
- S(F);P_SPINP(E)
- Threat
- DUALS(4)
- Vars
- Q(b);CHECK,OGATE,XP(E)::QAB(A),XQ(b)
- R(f);XB(I)::QAR(A)+S(D)
- Q(b);N_PINP(E)::QAR(A)+S(D)
- Refutation
- Q(b);N_PINP(E),XP(C)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- Q(b);N_GUARD::S(F),XP(c)
- Refutation
- Q(b);P_PINS(F),XP(E)
- Try
- Actual
- Q(A);
- Threat
- QAB1(A)
- Vars
- Q(b);OGATE,P_PINS(F),XP(E)::QAB(A),XQ(b)
- Q(b);N_GUARD::S(F),XP(c)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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