MESON Chess Problem Database

Problem Display
PID: 153402 (K2n4/R2P1p2/3pkP2/NB1p4/1N1Bq1P1/4QR2/8/8 w - - 0 1)

Barth, Michael

1st Comm., Wola Gulowska, 1994

K2n4/R2P1p2/3pkP2/NB1p4/1N1Bq1P1/4QR2/8/8

#2

11 + 6

15345 Wola Gulowska Award 1994
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3
      • 2.Rxe3#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sf4#
      • 1...Qxe3
        • 2.Rxe3#
      • 1...Qe5!
    • 1.Bc4?
      • threat
        • 2.Bxd5#
        • 2.Qxe4#
      • 1...dxc4+
        • 2.Qxe4#
      • 1...Qxe3
        • 2.Bxd5#
        • 2.Rxe3#
      • 1...Qe5
        • 2.Bxd5#
      • 1...Sc6
        • 2.Bxd5#
      • 1...Sb7!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Qxe4#
      • 1...Kxd5
        • 2.Bc4#
      • 1...Qxe3
        • 2.Sc7#
      • 1...Qe5
        • 2.Sc7#
      • 1...Sc6
        • 2.Sf4#

Anticipated by 63517(1976)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_SPINQ(a),OGATE,XQ(A)::R(B),XQ(a)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • Q(a);N_SPINQ(a),OGATE,XQ(A)::R(B),XQ(a)
      • Refutation
        • Q(a);
    • Try
      • B(G);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);CHECK,N_SPINP(b),XB(G)::QAR2(A),XQ(a)
        • Q(a);::B(G),XP(b)
        • S(f);::B(G),XP(b)
      • Refutation
        • S(f);
  • Actual
    • S(C);P_SPINS(C),XP(b)
    • Threat
      • QAR2(A),XQ(a)
    • Vars
      • K(d);N_SPINQ(a),OGATEB,S_FLIGHT,XS(C)::B(G)
      • Q(a);N_PINS(C),N_SPINQ(a),XQ(A)::S(C)
      • Q(a);N_PINS(C)::S(C)
      • S(f);N_PINS(C)::S(C)
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