MESON Chess Problem Database
Problem Display
PID: 17588 (2R3B1/6p1/2npq3/rpbr1pPp/nPk3NK/Q1Bp2R1/2Np4/8 w - - 0 1)
Arnstam, Knut Anders Olof
Froberg, Johan Hilding Laurentius
1st HM., Tijdschrift vd NSB, 1947
#2
10 + 14
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Se3#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxb4
- 2.Qxb4#
- 1...Se5
- 2.Sce3#
- 2.Sge3#
- 1...dxc2
- 2.Qa2#
- 1...Rd4
- Tries
- 1.Ba1?
- threat
- 2.Qa2#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxb4
- 2.Qxb4#
- 1...dxc2
- 2.Qb3#
- 1...Sc3
- 2.Qxc3#
- 1...Sb6
- 2.Qc3#
- 1...Sd4
- 2.Qxd3#
- 1...Sb2!
- threat
- 1.Bb2?
- threat
- 2.Qa2#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxb4
- 2.Qxb4#
- 1...dxc2
- 2.Qb3#
- 1...Sc3
- 2.Qxc3#
- 1...Sb6
- 2.Qc3#
- 1...Sd4
- 2.Qxd3#
- 1...Sxb2!
- threat
- 1.Bxd2?
- threat
- 2.Qa2#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxb4
- 2.Qxb4#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sb6
- 2.Qc3#
- 1...Sd4
- 2.Qxd3#
- 1...dxc2!
- threat
- 1.Bd4?
- threat
- 2.Qa2#
- 2.Qxd3#
- 1...Rxd4
- 2.Se3#
- 1...Bxd4
- 2.Qxd3#
- 1...Sxb4
- 2.Qxb4#
- 1...Sxd4
- 2.Qxd3#
- 1...Re5
- 2.Qa2#
- 1...d1Q
- 2.Qa2#
- 1...d1R
- 2.Qa2#
- 1...Qe2
- 2.Qa2#
- 1...Qe3
- 2.Sgxe3#
- 2.Qa2#
- 1...Qe4
- 2.Qa2#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sb6
- 2.Qc3#
- 2.Qxd3#
- 1...Se5
- 2.Sge3#
- 2.Qa2#
- 1...dxc2!
- threat
- 1.Be5?
- threat
- 2.Qa2#
- 1...Qxe5
- 2.Qxd3#
- 1...Rxe5
- 2.Qxd3#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxb4
- 2.Sce3#
- 2.Sge3#
- 2.Qxb4#
- 1...Sxe5
- 2.Sge3#
- 1...dxc2
- 2.Qb3#
- 1...Rd4
- 2.Se3#
- 1...Bd4
- 2.Qxd3#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sb6
- 2.Qc3#
- 1...Sd4
- 2.Sce3#
- 2.Sge3#
- 2.Qxd3#
- 1...dxe5!
- threat
- 1.Bf6?
- threat
- 2.Qa2#
- 1...Qxf6
- 2.Qxd3#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxb4
- 2.Qxb4#
- 1...dxc2
- 2.Qb3#
- 1...Rd4
- 2.Se3#
- 1...Re5
- 2.Qxd3#
- 1...Qe5
- 2.Qxd3#
- 1...Bd4
- 2.Qxd3#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sb6
- 2.Qc3#
- 1...Sd4
- 2.Qxd3#
- 1...Se5
- 2.Sge3#
- 1...gxf6!
- threat
- 1.Ba1?
- Keys
- 1.Bxg7!
- threat
- 2.Qa2#
- 1...Bxb4
- 2.Qxb4#
- 1...Sxb4
- 2.Qxb4#
- 1...dxc2
- 2.Qb3#
- 1...Rd4
- 2.Se3#
- 1...Re5
- 2.Qxd3#
- 1...Qe5
- 2.Qxd3#
- 1...Qf6
- 2.Qxd3#
- 1...Bd4
- 2.Qxd3#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sb6
- 2.Qc3#
- 1...Sd4
- 2.Qxd3#
- 1...Se5
- 2.Sge3#
- threat
- 1.Bxg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(h);P_PINS(F),P_SPINQ(m),S_CUTB(g)::S(A)
- B(g);OGATE,P_SPINS(k),XP(E)::QAR1(B),XB(g)
- S(k);OGATE,P_SPINB(g),XP(E)::QAR1(B),XS(k)
- P(b);XS(A)::QAB(B)
- Tries
- Try
- B(C);
- Threat
- QAB(B)
- Vars
- B(g);OGATE,P_SPINS(k),XP(E)::QAR1(B),XB(g)
- S(k);OGATE,P_SPINB(g),XP(E)::QAR1(B),XS(k)
- P(b);XS(A)::QAB1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- S(c);N_GUARD::QAR1(B)
- S(k);P_SPINB(g),S_CUTR(h)::QAB1(B),XP(b)
- Refutation
- S(c);
- Try
- B(C);
- Threat
- QAB(B)
- Vars
- B(g);OGATE,P_SPINS(k),XP(E)::QAR1(B),XB(g)
- S(k);OGATE,P_SPINB(g),XP(E)::QAR1(B),XS(k)
- P(b);XS(A)::QAB1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- S(c);N_GUARD::QAR1(B)
- S(k);P_SPINB(g),S_CUTR(h)::QAB1(B),XP(b)
- Refutation
- S(c);XB(C)
- Try
- B(C);XP(a)
- Threat
- QAB(B)
- Vars
- B(g);OGATE,P_SPINS(k),XP(E)::QAR1(B),XB(g)
- S(k);OGATE,P_SPINB(g),XP(E)::QAR1(B),XS(k)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- S(k);P_SPINB(g),S_CUTR(h)::QAB1(B),XP(b)
- Refutation
- P(b);XS(A)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(h);P_PINS(F),P_SPINQ(m),SBLOCK,XB(C)::S(A)
- B(g);P_SPINS(k),XB(C)::QAB1(B),XP(b)
- S(k);OGATE,P_SPINB(g),XP(E)::QAR1(B),XS(k)
- S(k);P_SPINB(g),XB(C)::QAB1(B),XP(b)
- R(h);P_SPINQ(m)::QAB(B)
- P(a);::QAB(B)
- Q(m);P_SPINR(h)::QAB(B)
- Q(m);P_PINS(F),P_SPINR(h)::QAB(B)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- Refutation
- P(b);XS(A)
- Try
- B(C);
- Threat
- QAB(B)
- Vars
- Q(m);P_SPINR(h),XB(C)::QAB1(B),XP(b)
- R(h);N_GUARD,P_SPINQ(m),XB(C)::QAB1(B),XP(b)
- B(g);OGATE,P_SPINS(k),XP(E)::QAR1(B),XB(g)
- S(k);P_SPINB(g),XB(C)::S(F)
- P(b);XS(A)::QAB1(B)
- R(h);P_PINS(F),P_SPINQ(m),S_CUTB(g)::S(A)
- B(g);P_SPINS(k),S_CUTR(h)::QAB1(B),XP(b)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- Refutation
- P(l);XB(C)
- Try
- B(C);
- Threat
- QAB(B)
- Vars
- Q(m);P_PINP(H),P_SPINR(h),XB(C)::QAB1(B),XP(b)
- B(g);OGATE,P_SPINS(k),XP(E)::QAR1(B),XB(g)
- S(k);OGATE,P_SPINB(g),XP(E)::QAR1(B),XS(k)
- P(b);XS(A)::QAB1(B)
- R(h);P_PINS(F),P_SPINQ(m),S_CUTB(g)::S(A)
- R(h);N_GUARD,P_SPINQ(m)::QAB1(B),XP(b)
- Q(m);P_SPINR(h)::QAB1(B),XP(b)
- B(g);P_SPINS(k),S_CUTR(h)::QAB1(B),XP(b)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- S(k);P_SPINB(g),S_CUTR(h)::QAB1(B),XP(b)
- S(k);P_SPINB(g),S_CUTQ(m)::S(F)
- Refutation
- P(n);XB(C)
- Try
- Actual
- B(C);XP(n)
- Threat
- QAB(B)
- Vars
- B(g);OGATE,P_SPINS(k),XP(E)::QAR1(B),XB(g)
- S(k);OGATE,P_SPINB(g),XP(E)::QAR1(B),XS(k)
- P(b);XS(A)::QAB1(B)
- R(h);P_PINS(F),P_SPINQ(m),S_CUTB(g)::S(A)
- R(h);N_GUARD,P_SPINQ(m)::QAB1(B),XP(b)
- Q(m);P_SPINR(h)::QAB1(B),XP(b)
- Q(m);P_PINP(H),P_SPINR(h)::QAB1(B),XP(b)
- B(g);P_SPINS(k),S_CUTR(h)::QAB1(B),XP(b)
- S(c);N_GUARD::QAR1(B)
- S(c);N_GUARD::QAR1(B),XS(c)
- S(k);P_SPINB(g),S_CUTR(h)::QAB1(B),XP(b)
- S(k);P_SPINB(g),S_CUTQ(m)::S(F)
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).