MESON Chess Problem Database

Problem Display
PID: 44699 (1n6/2K5/p7/kr3R2/Pq6/1P1Q4/3B4/5b2 w - - 0 1)

Seidemann, Felix

Recomm., BCF 039. Ty., 1941-1942

1n6/2K5/p7/kr3R2/Pq6/1P1Q4/3B4/5b2

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd2
      • 2.Qxd2#
    • 1...Qc3+
      • 2.Bxc3#
      • 2.Qxc3#
    • 1...Rc5+
      • 2.Rxc5#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Re5
      • 2.Rxe5#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Bxb4#
        • 2.Qb6#
        • 2.Qxb4#
      • 1...Qc3+
        • 2.Bxc3#
        • 2.Qxc3#
      • 1...Qxd2
        • 2.Qxd2#
      • 1...Sc6
        • 2.Qb6#
      • 1...Bc4
        • 2.Qb6#
      • 1...Sd7
        • 2.Bxb4#
        • 2.Qxb4#
      • 1...Rc5+!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Kc8#
      • 1...Qc3+
        • 2.Bxc3#
      • 1...Rc5+
        • 2.Kd6#
      • 1...Qxd2
        • 2.Qxd2#
      • 1...Sc6
        • 2.Kxc6#
      • 1...Sd7
        • 2.Kxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_SPINQ(b),OGATE,XB(A)::QAB(C),XQ(b)
    • R(d);CHECK,OGATEB::R(E),XR(d)
    • R(d);OGATEB::R(E),XR(d)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XB(A)::QAB(C),XQ(b)
        • S(f);::QAB1(C)
        • B(a);::QAB1(C)
      • Refutation
        • R(d);CHECK
  • Actual
    • Q(C);
    • Threat
      • QAB(C)+K(F)
    • Vars
      • Q(b);CHECK,OGATEB::B(A),XQ(b)
      • R(d);CHECK::QAB(C)+K(F)
      • Q(b);N_SPINQ(b),OGATE,XB(A)::QAB(C),XQ(b)
      • S(f);::QAB(C)+K(F),XS(f)
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