MESON Chess Problem Database

Problem Display
PID: 110706 (3N4/4p2p/p2pP2P/Pp1Rp1QP/1K1pk3/6PP/5p2/3N1B2 w - - 0 1)

Asplund, Per Ivan Rune

Springaren, 1952

3N4/4p2p/p2pP2P/Pp1Rp1QP/1K1pk3/6PP/5p2/3N1B2

#2

12 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qg4#
    • 1...Kxd5
      • 2.Bg2#
    • 1...d3
      • 2.Bg2#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Bg2#
      • 1...Kxd5
        • 2.Bg2#
      • 1...Kf3!
    • 1.Sxf2+?
      • 1...Kxd5
        • 2.Bg2#
      • 1...Kf3!
    • 1.Sc3+?
      • 1...dxc3
        • 2.Bg2#
      • 1...Kf3!
    • 1.Se3?
      • 1...dxe3
        • 2.Bg2#
      • 1...d3
        • 2.Bg2#
      • 1...Kf3!
    • 1.Sc6?
      • 1...Kf3
        • 2.Qg4#
      • 1...d3
        • 2.Bg2#
      • 1...Kxd5!
    • 1.Sb7?
      • 1...Kf3
        • 2.Qg4#
      • 1...d3
        • 2.Bg2#
      • 1...Kxd5!
    • 1.Sf7?
      • 1...Kf3
        • 2.Qg4#
      • 1...d3
        • 2.Bg2#
      • 1...Kxd5!
    • 1.Rxb5?
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qg4#
      • 1...axb5!
    • 1.Rc5?
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qg4#
      • 1...dxc5+!
    • 1.Rxe5+?
      • 1...Kf3
        • 2.Qf4#
        • 2.Qg4#
      • 1...dxe5!
    • 1.Rxd6?
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qg4#
      • 1...exd6!
    • 1.Qh4+?
      • 1...Kf3
        • 2.Qg4#
      • 1...Kf5
        • 2.Bd3#
        • 2.Qf4#
      • 1...Kxd5!
    • 1.Qxe5+?
      • 1...Kf3
        • 2.Qf4#
      • 1...dxe5!
    • 1.Qf5+?
      • 1...Kxd5
        • 2.Bg2#
      • 1...Kxf5!
    • 1.g4?
      • 1...Kxd5
        • 2.Bg2#
      • 1...d3
        • 2.Bg2#
      • 1...Kf3!
    • 1.h4?
      • 1...Kxd5
        • 2.Bg2#
      • 1...d3
        • 2.Bg2#
      • 1...Kf3!
  • Keys
    • 1.Qd2!
      • 1...Kf3
        • 2.Qd3#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Kf5
        • 2.Qf4#
      • 1...d3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(H)
    • K(c);P_SPINP(e),S_FLIGHT,XR(G)::B(B)
    • P(b);::B(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • B(B)
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(A);CHECK,XP(a)
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • P(b);XS(A)::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(b);XS(A)::B(B)
        • P(b);::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(L);
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
        • P(b);::B(B)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)
    • Try
      • S(L);
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
        • P(b);::B(B)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)
    • Try
      • S(L);
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
        • P(b);::B(B)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)
    • Try
      • R(G);XP(d)
      • Threat
        • QAR2(H)
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
      • Refutation
        • P(f);XR(G)
    • Try
      • R(G);
      • Threat
        • QAR2(H)
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
      • Refutation
        • P(g);CHECK,XR(G)
    • Try
      • R(G);CHECK,XP(e)
      • Refutation
        • P(g);XR(G)
    • Try
      • R(G);XP(g)
      • Threat
        • QAR2(H)
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
      • Refutation
        • P(h);XR(G)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
    • Try
      • Q(H);CHECK,XP(e)
      • Vars
        • K(c);S_FLIGHT::QAR1(H)
      • Refutation
        • P(g);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)::B(B)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT,XQ(H)
    • Try
      • P(C);
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)::B(B)
        • P(b);::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT,XR(G)::B(B)
        • P(b);::B(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(c);S_FLIGHT::QAR2(H)
      • K(c);P_SPINP(b),S_FLIGHT,XR(G)::S(A)
      • K(c);P_SPINP(e),S_FLIGHT::QAR1(H)
      • P(b);::QAB1(H),XP(b)
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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).