MESON Chess Problem Database

Problem Display
PID: 34912 (8/2b5/1p4R1/2k1p3/Pp6/3Q2p1/3KRr2/6B1 w - - 0 1)

Wakashima, Tadashi

Problem Paradise, 1999

8/2b5/1p4R1/2k1p3/Pp6/3Q2p1/3KRr2/6B1

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Bxf2#
  • Tries
    • 1.Rxf2?
      • threat
        • 2.Rf1#
        • 2.Re2#
        • 2.Rg2#
        • 2.Rh2#
        • 2.Rf3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rff6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...gxf2
        • 2.Bxf2#
      • 1...b3
        • 2.Rf4#
      • 1...g2
        • 2.Rf1#
        • 2.Re2#
        • 2.Rfxg2#
        • 2.Rf3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rff6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...e4
        • 2.Rf5#
      • 1...Bd6!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Qb5#
      • 1...Rxe2+
        • 2.Kxe2#
      • 1...Rf3+
        • 2.Kxf3#
      • 1...Rf6
        • 2.Rc2#
      • 1...b5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD::B(A),XR(a)
  • Tries
    • Try
      • R(C);N_SPINR(C),XR(a)
      • Threat
        • DUALS(10)
      • Vars
        • P(b);OGATE,P_SPINP(b),XR(C)::B(A),XP(b)
        • P(c);::B(A)+R(C)
        • P(e);::B(A)+R(C),DCHECK
      • Refutation
        • B(g);
  • Actual
    • K(B);N_PINR(a),N_SPINR(C),S_FLIGHT
    • Threat
      • QAR1(D)
    • Vars
      • R(a);CHECK,XR(C)::B(A)+K(B),XR(a)
      • R(a);CHECK::B(A)+K(B),XR(a)
      • R(a);N_GUARD::R(C)
      • P(f);::QAR1(D),XP(f)
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