MESON Chess Problem Database

Problem Display
PID: 71568 (8/4p3/2p1Q3/2P2p2/3k1p2/2R1nK2/1P2B3/8 w - - 0 1)

Ceder, Sven Ture

1st HM., Schackvarlden TT, 1943

8/4p3/2p1Q3/2P2p2/3k1p2/2R1nK2/1P2B3/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Rc4#
    • 1...Sf1
      • 2.Rc4#
    • 1...Sc2
      • 2.Rc4#
    • 1...Sg2
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sg4
      • 2.Rc4#
    • 1...Sd5
      • 2.Rc4#
  • Tries
    • 1.Bf1?
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sc2
        • 2.Rc4#
      • 1...Sg2
        • 2.Rc4#
      • 1...Sg4
        • 2.Rc4#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sxf1!
    • 1.Rc1?
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sf1
        • 2.Rc4#
      • 1...Sg2
        • 2.Rc4#
      • 1...Sg4
        • 2.Rc4#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sc2!
    • 1.Rc2?
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sf1
        • 2.Rc4#
      • 1...Sg2
        • 2.Rc4#
      • 1...Sg4
        • 2.Rc4#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sxc2!
    • 1.Qxf5?
      • threat
        • 2.Qe4#
      • 1...Sc4
        • 2.Rd3#
        • 2.Rxc4#
      • 1...Sxf5!
    • 1.Qxe3+?
      • 1...Kd5
        • 2.Bc4#
      • 1...fxe3!
    • 1.Qd6+?
      • 1...Sd5
        • 2.Rc4#
      • 1...exd6!
    • 1.b3?
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sf1
        • 2.Rc4#
      • 1...Sc2
        • 2.Rc4#
      • 1...Sg2
        • 2.Rc4#
      • 1...Sg4
        • 2.Rc4#
      • 1...Sd5
        • 2.Rc4#
      • 1...Kxc3!
    • 1.b4?
      • threat
        • 2.Rd3#
      • 1...Sd5
        • 2.Rc4#
      • 1...Kxc3!
  • Keys
    • 1.Qxe7!
      • 1...Kd5
        • 2.Qd6#
      • 1...Sd1
        • 2.Qd6#
      • 1...Sf1
        • 2.Qd6#
      • 1...Sc2
        • 2.Qd6#
      • 1...Sg2
        • 2.Qd6#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sg4
        • 2.Qd6#
      • 1...Sd5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
  • Tries
    • Try
      • B(B);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
        • S(a);N_GUARD::R1(C)
      • Refutation
        • S(a);XB(B)
    • Try
      • R(C);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
        • S(a);N_GUARD::R1(C)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
        • S(a);N_GUARD::R1(C)
      • Refutation
        • S(a);XR(C)
    • Try
      • Q(F);XP(d)
      • Threat
        • QAR1(F)
      • Refutation
        • S(a);XQ(F)
    • Try
      • Q(F);CHECK,XS(a)
      • Vars
        • K(b);P-FLIGHT::B(B)
      • Refutation
        • P(c);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • S(a);P_SPINS(a)::R1(C)
      • Refutation
        • P(f);XQ(F)
    • Try
      • P(A);
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
        • S(a);N_GUARD::R1(C)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • P(A);
      • Threat
        • R1(C)
      • Vars
        • S(a);N_GUARD::R1(C)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
  • Actual
    • Q(F);XP(f)
    • Vars
      • K(b);P-FLIGHT::QAR1(F)
      • S(a);N_GUARD::QAR2(F)
      • S(a);SBLOCK::R1(C)
      • S(a);N_GUARD,SBLOCK::R1(C)
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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).