MESON Chess Problem Database
Problem Display
PID: 91660 (3N4/5p2/3p1n2/3kB2p/1b4RK/2R4p/b3Q3/3r4 w - - 0 1)
Goldschmeding, Cornelis
Probleemblad, 1974
#2
6 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rd4#
- 1...Rb1
- 2.Rd4#
- 1...Rc1
- 2.Rd4#
- 1...Re1
- 2.Rd4#
- 1...Rf1
- 2.Rd4#
- 1...Rg1
- 2.Rd4#
- 1...Rh1
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Bxc3
- 2.Qb5#
- 1...Ba5
- 2.Qb5#
- 1...Se4
- 2.Qxe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...dxe5
- 2.Qxd1#
- 1...Ra1
- Tries
- 1.Bxf6?
- threat
- 2.Rg5#
- 2.Qxd1#
- 2.Qf3#
- 2.Qxa2#
- 2.Qe4#
- 1...Bxc3
- 2.Qb5#
- 1...Bc4
- 2.Rg5#
- 2.Qxc4#
- 1...Ra1
- 2.Rd4#
- 2.Rg5#
- 2.Qd3#
- 2.Qf3#
- 2.Qd2#
- 2.Qe4#
- 1...Rb1
- 2.Rd4#
- 2.Rg5#
- 2.Qd3#
- 2.Qf3#
- 2.Qd2#
- 2.Qe4#
- 1...Rc1
- 2.Rd4#
- 2.Rg5#
- 2.Qd3#
- 2.Qf3#
- 2.Qxa2#
- 2.Qd2#
- 2.Qe4#
- 1...Re1
- 2.Rd4#
- 2.Rg5#
- 2.Qd3#
- 2.Qxa2#
- 2.Qd2#
- 1...Rf1
- 2.Rd4#
- 2.Qd3#
- 2.Qxa2#
- 2.Qd2#
- 2.Qe4#
- 1...Rg1
- 2.Rd4#
- 2.Qd3#
- 2.Qf3#
- 2.Qxa2#
- 2.Qd2#
- 2.Qe4#
- 1...Rh1
- 2.Rd4#
- 2.Rg5#
- 2.Qd3#
- 2.Qf3#
- 2.Qxa2#
- 2.Qd2#
- 2.Qe4#
- 1...Rd2
- 2.Rg5#
- 2.Qf3#
- 2.Qxd2#
- 2.Qe4#
- 1...Rd3
- 2.Rg5#
- 2.Qxd3#
- 2.Qxa2#
- 2.Qe4#
- 1...Rd4
- 2.Rxd4#
- 1...Bb1
- 2.Qc4#
- 1...Bb3
- 2.Rg5#
- 2.Qf3#
- 2.Qe4#
- 1...Bc5
- 2.Rg5#
- 2.Qf3#
- 2.Qxa2#
- 2.Qe4#
- 1...hxg4!
- threat
- 1.Rxb4?
- threat
- 2.Rb5#
- 2.Qb5#
- 1...Rd4+
- 2.Rxd4#
- 1...dxe5
- 2.Qxd1#
- 1...Se4
- 2.Qxe4#
- 1...Rb1
- 2.Rd4#
- 2.Qb5#
- 1...Rd3
- 2.Rb5#
- 1...Sd7
- 2.Qe4#
- 1...Bc4!
- threat
- 1.Qf3+?
- 1...Se4
- 2.Qxe4#
- 1...Kxe5!
- 1...Se4
- 1.Qc4+?
- 1...Kxe5
- 2.Rg5#
- 1...Bxc4!
- 1...Kxe5
- 1.Qd2+?
- 1...Kxe5
- 2.Qg5#
- 1...Rxd2!
- 1...Kxe5
- 1.Bxf6?
- Keys
- 1.Rg5!
- threat
- 2.Bxf6#
- 1...Rd4+
- 2.Bf4#
- 1...Bxc3
- 2.Bxc3#
- 1...dxe5
- 2.Qxe5#
- 1...Rf1
- 2.Qd3#
- 1...Rg1
- 2.Qd3#
- 1...Bb1
- 2.Qc4#
- 1...Se4
- 2.Qxa2#
- 1...Sg4
- 2.Qf3#
- 1...Sd7
- 2.Qf3#
- 1...Sh7
- 2.Qf3#
- 1...Se8
- 2.Bf6#
- 2.Qf3#
- 1...Sg8
- 2.Bf6#
- 2.Qf3#
- threat
- 1.Rg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 8
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::R1(C)
- R(a);N_GUARD,P_PINR(C)::R1(C),XR(a)
- B(d);N_GUARD,XR(B)::QAR2(A)
- B(d);N_GUARD::QAR2(A)
- S(h);N_GUARD::QAB1(A),XS(h)
- S(h);N_GUARD::QAB1(A)
- P(g);SBLOCK,XB(E)::QAR(A),XR(a)
- Tries
- Try
- B(E);XS(h)
- Threat
- DUALS(5)
- Vars
- B(d);N_GUARD,XR(B)::QAR2(A)
- R(a);N_GUARD,P_PINR(C)::R1(C),XR(a)
- B(b);N_GUARD::QAB1(A)
- Refutation
- P(f);XR(C)
- Try
- R(C);XB(d)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,N_GUARD::R1(C),XR(a)
- P(g);SBLOCK,XB(E)::QAR(A),XR(a)
- S(h);N_GUARD::QAB1(A),XS(h)
- R(a);::R(C)
- S(h);N_GUARD::QAB1(A)
- Refutation
- B(b);
- Try
- Q(A);CHECK
- Vars
- S(h);N_GUARD,P_SPINS(h)::QAB1(A),XS(h)
- Refutation
- K(e);P-FLIGHT,XB(E)
- Try
- Q(A);CHECK
- Vars
- K(e);P-FLIGHT,XB(E)::R(C)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- K(e);OGATEB,P-FLIGHT,XB(E)::QAR2(A)
- Refutation
- R(a);XQ(A)
- Try
- Actual
- R(C);
- Threat
- R(C)+B(E),XS(h)
- Vars
- R(a);CHECK,SBLOCK::R(C)+B(E)
- B(d);OGATE,XR(B)::R(C)+B(E),XB(d)
- P(g);OGATE,P_SPINP(g),XB(E)::QAR1(A),XP(g)
- R(a);N_GUARD::QAR2(A)
- B(b);N_GUARD::QAB1(A)
- S(h);SBLOCK::QAB(A),XB(b)
- S(h);N_GUARD::QAB(A)
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