MESON Chess Problem Database
Problem Display
PID: 140326 (8/B7/2pp1R2/2pkqRn1/3p2p1/1P4P1/4Q3/2K5 w - - 0 1)
Albarda, Johannes
3rd Place, Match: Greece - Netherlands, 1974
#2
7 + 8
| 102 | Probleemblad | 1976 |
| 133 | The Problemist Supplement | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qxf5
- 2.Rxf5#
- 1...Sh3
- 2.Qg2#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...Sh7
- 2.Qg2#
- 1...d3
- 2.Qxd3#
- 1...c4
- 2.bxc4#
- 1...Qxf5
- Tries
- 1.Kb1?
- 1...Qxf5+
- 2.Rxf5#
- 1...d3
- 2.Qxd3#
- 1...Sh3
- 2.Qg2#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...Sh7
- 2.Qg2#
- 1...c4
- 2.bxc4#
- 1...Sf3!
- 1...Qxf5+
- 1.Kd1?
- 1...Qxf5
- 2.Rxf5#
- 1...d3
- 2.Qxd3#
- 1...Sh3
- 2.Qg2#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...Sh7
- 2.Qg2#
- 1...c4
- 2.bxc4#
- 1...Sf3!
- 1...Qxf5
- 1.Kc2?
- 1...Qxf5+
- 2.Rxf5#
- 1...d3+
- 2.Qxd3#
- 1...Sh3
- 2.Qg2#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...Sh7
- 2.Qg2#
- 1...c4
- 2.bxc4#
- 1...Sf3!
- 1...Qxf5+
- 1.Bb6?
- 1...Qxf5
- 2.Rxf5#
- 1...d3
- 2.Qxd3#
- 1...Sh3
- 2.Qg2#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...Sh7
- 2.Qg2#
- 1...c4
- 2.bxc4#
- 1...Sf3!
- 1...Qxf5
- 1.Bb8?
- threat
- 2.Rxd6#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...c4!
- threat
- 1.Rxg5?
- threat
- 2.Qg2#
- 1...d3
- 2.Qxd3#
- 1...Qf5
- 2.Rgxf5#
- 2.Rfxf5#
- 2.Qe6#
- 1...Qxg5+!
- threat
- 1.Qc2?
- 1...Qxf5
- 2.Qxf5#
- 1...d3
- 2.Qxd3#
- 2.Qc4#
- 1...Sh3
- 2.Qg2#
- 1...Se4
- 2.Qc4#
- 1...Se6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...Sh7
- 2.Qg2#
- 1...c4
- 2.bxc4#
- 1...Sf3!
- 1...Qxf5
- 1.Kb1?
- Keys
- 1.Qxg4!
- 1...Qxf5
- 2.Qxf5#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Se4
- 2.Qg8#
- 1...Se6
- 2.Qf3#
- 1...Sf7
- 2.Qf3#
- 1...Sh7
- 2.Qf3#
- 1...d3
- 2.Qc4#
- 1...c4
- 2.Qxd4#
- 1...Qxf5
- 1.Qxg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(e);N_SPINQ(e),OGATE,XR(E)::R(F),XQ(e)
- S(f);N_GUARD::QAB(B)
- S(f);SBLOCK::QAB1(B)
- P(a);OGATEB::QAR2(B),XP(a)
- P(c);OGATE::P(C),XP(c)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- Q(e);CHECK,N_SPINQ(e),OGATE,XR(E)::R(F),XQ(e)
- P(a);OGATEB::QAR2(B),XP(a)
- S(f);N_GUARD::QAB(B)
- S(f);SBLOCK::QAB1(B)
- P(c);OGATE::P(C),XP(c)
- Refutation
- S(f);
- Try
- K(A);P-FLIGHT
- Vars
- Q(e);N_SPINQ(e),OGATE,XR(E)::R(F),XQ(e)
- P(a);OGATEB::QAR2(B),XP(a)
- S(f);N_GUARD::QAB(B)
- S(f);SBLOCK::QAB1(B)
- P(c);OGATE::P(C),XP(c)
- Refutation
- S(f);
- Try
- K(A);P-FLIGHT
- Vars
- Q(e);CHECK,N_SPINQ(e),OGATE,XR(E)::R(F),XQ(e)
- P(a);CHECK,OGATEB::QAR2(B),XP(a)
- S(f);N_GUARD::QAB(B)
- S(f);SBLOCK::QAB1(B)
- P(c);OGATE::P(C),XP(c)
- Refutation
- S(f);
- Try
- B(G);
- Vars
- Q(e);N_SPINQ(e),OGATE,XR(E)::R(F),XQ(e)
- P(a);OGATEB::QAR2(B),XP(a)
- S(f);N_GUARD::QAB(B)
- S(f);SBLOCK::QAB1(B)
- P(c);OGATE::P(C),XP(c)
- Refutation
- S(f);
- Try
- B(G);
- Threat
- R1(F),XP(h)
- Vars
- S(f);SBLOCK::QAB1(B)
- S(f);N_GUARD::QAB(B)
- Refutation
- P(c);
- Try
- R(E);XS(f)
- Threat
- QAB(B)
- Vars
- P(a);OGATEB::QAR2(B),XP(a)
- Refutation
- Q(e);CHECK,N_SPINQ(e),XR(E)
- Try
- Q(B);
- Vars
- Q(e);N_SPINQ(e),OGATE,XR(E)::QAR2(B),XQ(e)
- S(f);N_GUARD::QAB(B)
- S(f);SBLOCK::QAB1(B)
- P(c);OGATE::P(C),XP(c)
- Refutation
- S(f);
- Try
- Actual
- Q(B);XP(b)
- Vars
- Q(e);N_SPINQ(e),OGATE,XR(E)::QAR2(B),XQ(e)
- S(f);N_GUARD::QAB(B),XS(f)
- S(f);N_GUARD::QAB(B)
- S(f);OGATE,SBLOCK::QAB(B)
- P(a);OGATE::QAB1(B)
- P(c);N_GUARD::QAR1(B),XP(a)
Developed and maintained by Brian Stephenson.
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