MESON Chess Problem Database

Problem Display
PID: 98903 (7N/8/4kP1n/r2R3K/1b1PN3/1Q2Rp1p/B1q5/8 w - - 0 1)

Talaber, Laszlo

Problemas, 1971

7N/8/4kP1n/r2R3K/1b1PN3/1Q2Rp1p/B1q5/8

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5+
      • 2.Qxd5#
    • 1...Bc3
      • 2.Qb6#
    • 1...Sf5
      • 2.Rd6#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Sc5#
      • 1...Qg2+
        • 2.Sg3#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...Qxb3
        • 2.Sc3#
      • 1...Qxe4
        • 2.Rxe4#
      • 1...Qc4
        • 2.Sc3#
      • 1...Qc5
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sxc5#
      • 1...Rc5
        • 2.Sxc5#
      • 1...Bc5
        • 2.Sxc5#
        • 2.Rd6#
      • 1...Sf7+!
  • Keys
    • 1.Kg6!
      • threat
        • 2.Rd6#
      • 1...Qxe4+
        • 2.Rxe4#
      • 1...Qg2+
        • 2.Sg3#
        • 2.Sg5#
      • 1...Qxb3
        • 2.Sc3#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Qc4
        • 2.Sc3#
      • 1...Bd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(e);CHECK,OGATE,P_SPINR(e),XR(F)::QAB1(B),XR(e)
    • B(d);OGATE::QAR(B)
    • S(g);N_PINR(F),SBLOCK::QAB(B)+R(F),DCHECK
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • R(C)+S(E),DCHECK
      • Vars
        • Q(a);CHECK,N_GUARD::R(C)+S(E)
        • R(e);CHECK,OGATE,P_SPINR(e),XR(F)::QAB1(B),XR(e)
        • Q(a);N_GUARD,XQ(B)::R(C)+S(E)
        • Q(a);OGATE,P_SPINQ(a),XS(E)::R(C),XQ(a)
        • Q(a);N_GUARD::R(C)+S(E)
        • R(e);::R(C)+S(E),DCHECK,XR(e)
      • Refutation
        • S(g);CHECK
  • Actual
    • K(G);N_SPINR(F),P_SPINS(E),S_FLIGHT
    • Threat
      • QAB(B)+R(F),DCHECK
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::R(C),XQ(a)
      • Q(a);N_PINS(E),XQ(B)::R(C)+S(E)
      • R(e);OGATE,P_SPINR(e),XR(F)::QAB1(B),XR(e)
      • Q(a);N_PINS(E)::R(C)+S(E)
      • B(d);::QAB(B)+R(F),DCHECK,XB(d)
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