MESON Chess Problem Database

Problem Display
PID: 110295 (3NRb1K/4n1pB/6Pp/1pP2p1Q/1p2kP2/1P2Pp2/2R2B2/2N5 w - - 0 1)

Loepert, Fritz

Mate, 1982

3NRb1K/4n1pB/6Pp/1pP2p1Q/1p2kP2/1P2Pp2/2R2B2/2N5

#2

13 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxf3#
  • Tries
    • 1.Sa2?
      • 1...Kd5
        • 2.Qxf3#
      • 1...Kd3!
    • 1.Sd3?
      • 1...Kd5
        • 2.Qxf3#
      • 1...Kxd3!
    • 1.Bg1?
      • 1...Kd5
        • 2.Qxf3#
      • 1...f2!
    • 1.Rc3?
      • 1...Kd5
        • 2.Qxf3#
      • 1...bxc3!
    • 1.Rc4+?
      • 1...Kd5
        • 2.Qxf3#
        • 2.e4#
      • 1...bxc4!
    • 1.Rxe7+?
      • 1...Kd5
        • 2.Bg8#
        • 2.Re5#
        • 2.Qxf3#
        • 2.Qxf5#
        • 2.e4#
      • 1...Bxe7!
    • 1.Rxf8?
      • 1...Kd5
        • 2.Qxf3#
      • 1...Sd5
        • 2.Qxf5#
      • 1...Sc6
        • 2.Qxf5#
      • 1...Sc8
        • 2.Qxf5#
      • 1...Sg8
        • 2.Qxf5#
      • 1...Sxg6+!
    • 1.Qh1?
      • 1...Kd5
        • 2.Qxf3#
      • 1...h5!
    • 1.Qh3?
      • 1...Kd5
        • 2.Qxf3#
      • 1...h5!
  • Keys
    • 1.Re2!
      • 1...Kd5
        • 2.e4#
      • 1...fxe2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(g),P_SPINP(e),S_FLIGHT::QAB(H),XP(a)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(c);N_SPINS(g),P_SPINP(e),S_FLIGHT::QAB(H),XP(a)
      • Refutation
        • K(c);N_SPINS(g),S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(c);N_SPINS(g),P_SPINP(e),S_FLIGHT::QAB(H),XP(a)
      • Refutation
        • K(c);N_SPINS(g),S_FLIGHT,XS(A)
    • Try
      • B(C);
      • Vars
        • K(c);N_SPINS(g),P_SPINP(e),S_FLIGHT::QAB(H),XP(a)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • K(c);N_SPINS(g),P_SPINP(e),S_FLIGHT::QAB(H),XP(a)
      • Refutation
        • P(b);XR(B)
    • Try
      • R(B);CHECK
      • Refutation
        • P(d);XR(B)
    • Try
      • R(L);CHECK,XS(g)
      • Refutation
        • B(i);XR(L)
    • Try
      • R(L);N_PINS(g),XB(i)
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::QAB(H),XP(a)
        • S(g);N_GUARD::QAB1(H),XP(e)
      • Refutation
        • S(g);CHECK,XP(I)
    • Try
      • Q(H);P_PINP(a)
      • Vars
        • K(c);N_SPINS(g),S_FLIGHT::QAB(H),XP(a)
      • Refutation
        • P(f);
    • Try
      • Q(H);
      • Vars
        • K(c);N_SPINS(g),S_FLIGHT::QAB(H),XP(a)
      • Refutation
        • P(f);
  • Actual
    • R(B);
    • Vars
      • K(c);N_SPINS(g),OGATE,P_SPINP(e),S_FLIGHT::P(E)
      • P(a);OGATEB,XR(B)::QAB(H)
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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).