MESON Chess Problem Database
Problem Display
PID: 271430 (6r1/p2pBR2/K3knP1/5N2/2n2p1q/3Q1N2/8/8 w - - 0 1)
Albarda, Johannes
Probleemblad, 1951
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Rxf6#
- 1...Qf2
- 2.Rxf6#
- 1...Qg3
- 2.Rxf6#
- 1...Qh1
- 2.Rxf6#
- 1...Qh2
- 2.Rxf6#
- 1...Qh3
- 2.Rxf6#
- 1...Qg4
- 2.Rxf6#
- 1...Qh5
- 2.Rxf6#
- 1...Qh6
- 2.Rxf6#
- 1...Qh7
- 2.Rxf6#
- 1...Rg7
- 2.Sxg7#
- 1...Ra8
- 2.Sg7#
- 1...Rb8
- 2.Sg7#
- 1...Rc8
- 2.Sg7#
- 1...Rd8
- 2.Sg7#
- 1...Re8
- 2.Sg7#
- 1...Rf8
- 2.Sg7#
- 1...Rh8
- 2.Sg7#
- 1...Sd5
- 2.S5d4#
- 1...Qe1
- Tries
- 1.Sg5+?
- 1...Ke5
- 2.Bxf6#
- 1...Qxg5!
- 1...Ke5
- 1.Ba3?
- threat
- 2.Re7#
- 1...Rg7
- 2.Sxg7#
- 1...Re8
- 2.Sg7#
- 1...Se4
- 2.Qxd7#
- 1...Sg4
- 2.Qxd7#
- 1...Sd5
- 2.S5d4#
- 1...Sh5
- 2.Qxd7#
- 1...Sh7
- 2.Qxd7#
- 1...Se8
- 2.Qxd7#
- 1...Qh7!
- threat
- 1.Bb4?
- threat
- 2.Re7#
- 1...Rg7
- 2.Sxg7#
- 1...Re8
- 2.Sg7#
- 1...Se4
- 2.Qxd7#
- 1...Sg4
- 2.Qxd7#
- 1...Sd5
- 2.S5d4#
- 1...Sh5
- 2.Qxd7#
- 1...Sh7
- 2.Qxd7#
- 1...Se8
- 2.Qxd7#
- 1...Qh7!
- threat
- 1.Bc5?
- threat
- 2.Re7#
- 1...Rg7
- 2.Sxg7#
- 1...Re8
- 2.Sg7#
- 1...Se4
- 2.Qxd7#
- 1...Sg4
- 2.Qxd7#
- 1...Sd5
- 2.S5d4#
- 1...Sh5
- 2.Qxd7#
- 1...Sh7
- 2.Qxd7#
- 1...Se8
- 2.Qxd7#
- 1...Qh7!
- threat
- 1.Bd8?
- threat
- 2.Re7#
- 1...Qh7
- 2.Rxf6#
- 1...Rg7
- 2.Sxg7#
- 1...Re8
- 2.Sg7#
- 1...Se4
- 2.Qxd7#
- 1...Sg4
- 2.Qxd7#
- 1...Sh5
- 2.Qxd7#
- 1...Sh7
- 2.Qxd7#
- 1...Se8
- 2.Qxd7#
- 1...Sd5!
- threat
- 1.Bf8?
- threat
- 2.Re7#
- 1...Rg7
- 2.Sxg7#
- 1...Se4
- 2.Qxd7#
- 1...Sg4
- 2.Qxd7#
- 1...Sd5
- 2.S5d4#
- 1...Sh5
- 2.Qxd7#
- 1...Sh7
- 2.Qxd7#
- 1...Se8
- 2.Qxd7#
- 1...Qh7!
- threat
- 1.Qe4+?
- 1...Se5
- 2.S3d4#
- 2.S5d4#
- 2.Qxe5#
- 1...Sxe4!
- 1...Se5
- 1.Qd5+?
- 1...Sxd5
- 2.S5d4#
- 1...Kxd5!
- 1...Sxd5
- 1.Sg5+?
- Keys
- 1.Bd6!
- threat
- 2.Re7#
- 1...Qh7
- 2.Sg5#
- 1...Rg7
- 2.Sxg7#
- 1...Re8
- 2.Sg7#
- 1...Se4
- 2.Qxc4#
- 1...Sg4
- 2.Qxc4#
- 1...Sd5
- 2.S3d4#
- 1...Sh5
- 2.Qxc4#
- 1...Sh7
- 2.Qxc4#
- 1...Se8
- 2.Qxc4#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 15
- Sets
- Q(c);N_GUARD::R1(G),XS(e)
- R(h);N_GUARD::S(C),XR(h)
- R(h);N_GUARD::S(C)
- S(e);SBLOCK::S(C)
- Tries
- Try
- S(B);CHECK
- Vars
- K(d);P-FLIGHT,S_CUTQ(c)::B(F),XS(e)
- Refutation
- Q(c);XS(B)
- Try
- B(F);
- Threat
- R1(G)
- Vars
- R(h);N_GUARD::S(C),XR(h)
- R(h);N_GUARD::S(C)
- S(e);N_GUARD::QAB1(A),XP(g)
- S(e);SBLOCK::S(C)
- Refutation
- Q(c);
- Try
- B(F);
- Threat
- R1(G)
- Vars
- R(h);N_GUARD::S(C),XR(h)
- R(h);N_GUARD::S(C)
- S(e);N_GUARD::QAB1(A),XP(g)
- S(e);SBLOCK::S(C)
- Refutation
- Q(c);
- Try
- B(F);
- Threat
- R1(G)
- Vars
- R(h);N_GUARD::S(C),XR(h)
- R(h);N_GUARD::S(C)
- S(e);N_GUARD::QAB1(A),XP(g)
- S(e);SBLOCK::S(C)
- Refutation
- Q(c);
- Try
- B(F);
- Threat
- R1(G)
- Vars
- Q(c);N_GUARD::R1(G),XS(e)
- R(h);N_GUARD::S(C),XR(h)
- R(h);N_GUARD::S(C)
- S(e);N_GUARD::QAB1(A),XP(g)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R1(G)
- Vars
- R(h);N_GUARD::S(C),XR(h)
- S(e);N_GUARD::QAB1(A),XP(g)
- S(e);SBLOCK::S(C)
- Refutation
- Q(c);
- Try
- Q(A);CHECK
- Refutation
- S(e);XQ(A)
- Try
- Q(A);CHECK
- Vars
- S(e);SBLOCK,XQ(A)::S(C)
- Refutation
- K(d);S_FLIGHT,XQ(A)
- Try
- Actual
- B(F);
- Threat
- R1(G)
- Vars
- Q(c);N_GUARD::S(B)
- R(h);N_GUARD::S(C),XR(h)
- R(h);N_GUARD::S(C)
- S(e);N_GUARD::QAB(A),XS(a)
- S(e);SBLOCK::S(B)
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