MESON Chess Problem Database

Problem Display
PID: 92897 (8/p1p1R3/BbP5/pQp4p/K5br/1PNp1p1p/1BNkPn1P/5R2 w - - 0 1)

Werle, Allan Theodor

Tidskrift for Schack, 1943

8/p1p1R3/BbP5/pQp4p/K5br/1PNp1p1p/1BNkPn1P/5R2

#2

12 + 13

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qxd3#
    • 1...Sh1
      • 2.Qxd3#
    • 1...Se4
      • 2.Qxd3#
  • Tries
    • 1.Se4+?
      • 1...Kxe2
        • 2.Re1#
      • 1...Sxe4
        • 2.Qxd3#
      • 1...Kxc2!
    • 1.Bc1+?
      • 1...Kxc3
        • 2.Qc4#
      • 1...Kxc2!
    • 1.Rd1+?
      • 1...Sxd1
        • 2.Qxd3#
      • 1...Kxc2!
  • Keys
    • 1.Rxf2!
      • threat
        • 2.Qxd3#
        • 2.exd3#
        • 2.exf3#
        • 2.e3#
        • 2.e4#
      • 1...Bf5+
        • 2.e4#
      • 1...Be6+
        • 2.e4#
      • 1...Bd7+
        • 2.e4#
      • 1...Bc8+
        • 2.e4#
      • 1...Kxc2
        • 2.exd3#
      • 1...dxc2
        • 2.exf3#
      • 1...dxe2
        • 2.Qd3#
      • 1...fxe2
        • 2.Qxd3#
      • 1...c4
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAR1(I),XP(c)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c),XP(D)::R1(A)
        • S(b);XS(G)::QAR1(I),XP(c)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • B(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(G)::QAR1(I)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • R(A);CHECK
      • Vars
        • S(b);XR(A)::QAR1(I),XP(c)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • R(A);XS(b)
    • Threat
      • DUALS(5)
    • Vars
      • B(f);CHECK::R(A)+P(D)
      • K(a);P-FLIGHT,XS(C)::R(A)+P(D),XP(c)
      • P(c);SBLOCK,XS(C)::R(A)+P(D),XP(d)
      • P(c);P_SPINP(c),XP(D)::QAR1(I)
      • P(d);P_SPINP(d),XP(D)::QAR1(I),XP(c)
      • P(i);::R(A)+P(D)
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