MESON Chess Problem Database

Problem Display
PID: 63242 (q2NR3/2pP4/1pP3bR/1PkN1p2/8/2P2Qnr/2P2P1B/n2K1B2 w - - 0 1)

Wirtanen, Erkki Aukusti

1st Prize, L'Italia Scacchistica, 1972

q2NR3/2pP4/1pP3bR/1PkN1p2/8/2P2Qnr/2P2P1B/n2K1B2

#2

14 + 9

3753 FIDE Album (1971-1973) 1978

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Sxb7#
    • 1...Qa2
      • 2.Sb7#
    • 1...Qa3
      • 2.Sb7#
    • 1...Qa4
      • 2.Sb7#
    • 1...Qa5
      • 2.Sb7#
    • 1...Sh1
      • 2.Se6#
    • 1...Sh5
      • 2.Se6#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Qa2
        • 2.Sb7#
      • 1...Bh5
        • 2.Re5#
      • 1...Se4
        • 2.Se6#
      • 1...Bf7!
    • 1.Sf4?
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Qa2
        • 2.Sb7#
      • 1...Bh5
        • 2.Re5#
      • 1...Bf7
        • 2.Qe3#
      • 1...Se4!
    • 1.Sxc7?
      • threat
        • 2.Qd5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Bf7
        • 2.Qe3#
      • 1...Qa2
        • 2.Sb7#
      • 1...Bh5
        • 2.Re5#
      • 1...Se4
        • 2.Sde6#
      • 1...Kd6!
    • 1.Se7?
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Bf7
        • 2.Qe3#
      • 1...Qa2
        • 2.Sb7#
      • 1...Se4
        • 2.Se6#
      • 1...Bh5!
    • 1.Qe3+?
      • 1...Kxd5
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kd6!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Qa2
        • 2.Sb7#
      • 1...Bh5
        • 2.Re5#
      • 1...Bf7
        • 2.Qe3#
      • 1...Se4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(i);N_GUARD::S(M),XQ(i)
    • Q(i);N_GUARD::S(M)
    • Q(i);N_GUARD,P_PINP(C)::S(M)
    • S(b);::S(M)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAR1(G)
      • Vars
        • K(d);P_SPINB(g),P_SPINS(b),S_FLIGHT::QAR1(G)
        • Q(i);OGATE,XP(J)::QAR1(G),XQ(i)
        • Q(i);N_GUARD::S(M)
        • B(g);P_PINQ(G)::R(N)
        • S(b);::S(M)
      • Refutation
        • B(g);
    • Try
      • S(I);
      • Threat
        • QAR1(G)
      • Vars
        • K(d);P_SPINB(g),S_FLIGHT::QAR1(G)
        • Q(i);OGATE,XP(J)::QAR1(G),XQ(i)
        • Q(i);N_GUARD::S(M)
        • B(g);P_PINQ(G)::R(N)
        • B(g);::QAB(G)
      • Refutation
        • S(b);
    • Try
      • S(I);XP(h)
      • Threat
        • QAR1(G)
      • Vars
        • Q(i);OGATE,XP(J)::QAR1(G),XQ(i)
        • B(g);::QAB(G)
        • Q(i);N_GUARD::S(M)
        • B(g);P_PINQ(G)::R(N)
        • S(b);::S(M)
      • Refutation
        • K(d);P_SPINB(g),P_SPINS(b),S_FLIGHT
    • Try
      • S(I);
      • Threat
        • QAR1(G)
      • Vars
        • K(d);P_SPINB(g),P_SPINS(b),S_FLIGHT::QAR1(G)
        • Q(i);OGATE,XP(J)::QAR1(G),XQ(i)
        • B(g);::QAB(G)
        • Q(i);N_GUARD::S(M)
        • S(b);::S(M)
      • Refutation
        • B(g);P_PINQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(d);P_SPINB(g),P_SPINS(b),S_FLIGHT
  • Actual
    • S(I);
    • Threat
      • QAR1(G)
    • Vars
      • K(d);P_SPINB(g),P_SPINS(b),S_FLIGHT::QAR1(G)
      • Q(i);OGATE,XP(J)::QAR1(G),XQ(i)
      • Q(i);N_GUARD::S(M)
      • B(g);P_PINQ(G)::R(N)
      • B(g);::QAB(G)
      • S(b);::S(M)
HTML5 logo

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).