MESON Chess Problem Database
Problem Display
PID: 40139 (8/p4pR1/2p5/3k1P1K/2N1r1Qp/B1nP1n2/2N5/3bR2B w - - 0 1)
Vane Bor
Recomm., BCF 025. Ty., 1937-1938
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxe1
- 2.Qd4#
- 1...Re2
- 2.Qd4#
- 1...Re3
- 2.S2xe3#
- 2.Qd4#
- 1...Rxc4
- 2.Qxc4#
- 2.dxc4#
- 1...Rd4
- 2.S2e3#
- 2.Re5#
- 2.Qxd4#
- 1...Rf4
- 2.Re5#
- 1...Rxg4
- 2.Re5#
- 1...Re5
- 2.Rxe5#
- 2.Qd4#
- 1...Re6
- 2.Qd4#
- 1...Re7
- 2.Qd4#
- 1...Re8
- 2.Qd4#
- 1...Sb1
- 2.Qxe4#
- 1...Sa2
- 2.Qxe4#
- 1...Se2
- 2.Qxe4#
- 1...Sa4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sd4
- 2.S2e3#
- 1...Se5
- 2.S4e3#
- 1...f6
- 2.Rd7#
- 1...Rxe1
- Tries
- 1.S4e3+?
- 1...Rxe3
- 2.Qd4#
- 1...Ke5!
- 1...Rxe3
- 1.Rxe4?
- threat
- 2.S2e3#
- 2.S4e3#
- 2.Rd4#
- 2.Re5#
- 1...Bxc2
- 2.Se3#
- 2.Rd4#
- 2.Re5#
- 1...Sxe4
- 2.Qxe4#
- 1...Se2
- 2.S2e3#
- 2.S4e3#
- 2.Re5#
- 1...Sb5
- 2.S2e3#
- 2.S4e3#
- 2.Re5#
- 1...Sd4
- 2.S2e3#
- 2.S4e3#
- 2.Rxd4#
- 2.Re5#
- 1...Se5
- 2.S2e3#
- 2.S4e3#
- 2.Rd4#
- 2.Rxe5#
- 1...f6
- 2.S2e3#
- 2.S4e3#
- 2.Rd4#
- 2.Rd7#
- 1...c5!
- threat
- 1.Rxf7?
- threat
- 2.Rd7#
- 1...Re6
- 2.Qd4#
- 1...Re7
- 2.Qd4#
- 1...Sb5
- 2.Qxe4#
- 1...Se5
- 2.S4e3#
- 1...c5!
- threat
- 1.Rg8?
- threat
- 2.Rd8#
- 1...Re6
- 2.Qd4#
- 1...Re7
- 2.Qd4#
- 1...Re8
- 2.Qd4#
- 1...Sb5
- 2.Qxe4#
- 1...Se5
- 2.S4e3#
- 1...c5!
- threat
- 1.dxe4+?
- 1...Sxe4
- 2.Qxe4#
- 1...Kxc4!
- 1...Sxe4
- 1.S4e3+?
- Keys
- 1.f6!
- threat
- 2.Qd7#
- 1...Re5+
- 2.Rxe5#
- 1...Rxg4
- 2.Re5#
- 1...Sxe1
- 2.Rg5#
- 1...Re6
- 2.Qd4#
- 1...Re7
- 2.Qd4#
- 1...Sb5
- 2.Qxe4#
- 1...Sg1
- 2.Rg5#
- 1...Sd2
- 2.Rg5#
- 1...Sh2
- 2.Rg5#
- 1...Sd4
- 2.S2e3#
- 1...Se5
- 2.S4e3#
- 1...Sg5
- 2.Rxg5#
- threat
- 1.f6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- R(d);OGATE,P_SPINS(c),XR(A)::QAR1(G)
- R(d);OGATE,P_SPINS(c)::QAR1(G)
- R(d);OGATE,P_SPINS(c)::R1(A)
- R(d);OGATE,P_SPINS(c),XQ(G)::R1(A)
- S(b);N_GUARD::QAB1(G),XR(d)
- S(c);P_PINQ(G),P_SPINR(d),SBLOCK::S(C)
- S(c);P_PINQ(G),P_SPINR(d),SBLOCK::S(F)
- P(i);OGATE::R(J)
- Tries
- Try
- S(F);CHECK
- Vars
- R(d);OGATE,P_SPINS(c),XS(F)::QAR1(G)
- Refutation
- K(f);P-FLIGHT
- Try
- R(A);XR(d)
- Threat
- DUALS(4)
- Vars
- S(b);OGATE,XR(A)::QAB1(G),XS(b)
- Refutation
- P(g);
- Try
- R(J);XP(i)
- Threat
- R(J)
- Vars
- R(d);OGATE,P_SPINS(c)::QAR1(G)
- S(b);N_GUARD::QAB1(G),XR(d)
- S(c);P_PINQ(G),P_SPINR(d),SBLOCK::S(F)
- Refutation
- P(g);
- Try
- R(J);
- Threat
- R(J)
- Vars
- R(d);OGATE,P_SPINS(c)::QAR1(G)
- S(b);N_GUARD::QAB1(G),XR(d)
- S(c);P_PINQ(G),P_SPINR(d),SBLOCK::S(F)
- Refutation
- P(g);
- Try
- P(E);CHECK,XR(d)
- Vars
- S(b);OGATE,XP(E)::QAB1(G),XS(b)
- Refutation
- K(f);S_FLIGHT,XS(F)
- Try
- Actual
- P(H);
- Threat
- QAR2(G)
- Vars
- R(d);CHECK,OGATE,P_SPINS(c)::R1(A),XR(d)
- R(d);OGATE,P_SPINS(c),XQ(G)::R1(A)
- S(c);N_GUARD,P_PINQ(G),P_SPINR(d),XR(A)::R(J)
- R(d);OGATE,P_SPINS(c)::QAR1(G)
- S(b);N_GUARD::QAB1(G),XR(d)
- S(c);N_GUARD,P_PINQ(G),P_SPINR(d)::R(J)
- S(c);P_PINQ(G),P_SPINR(d),SBLOCK::S(C)
- S(c);P_PINQ(G),P_SPINR(d),SBLOCK::S(F)
- S(c);N_GUARD,P_PINQ(G),P_SPINR(d)::R(J),XS(c)
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).