MESON Chess Problem Database

Problem Display
PID: 206506 (8/8/B7/2pp1K2/Qnbk2P1/p3RRp1/3p1n2/r3b1B1 w - - 0 1)

Neu, Miklos

Praqai Magyar Hirlap, 1925

8/8/B7/2pp1K2/Qnbk2P1/p3RRp1/3p1n2/r3b1B1

#2

7 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Rd3#
    • 1...Bb3
      • 2.Rd3#
    • 1...Bd3+
      • 2.Rxd3#
    • 1...Sd1
      • 2.Rd3#
      • 2.Re4#
      • 2.Rf4#
    • 1...Sh1
      • 2.Rd3#
      • 2.Re4#
      • 2.Rf4#
    • 1...Sfd3
      • 2.Rxd3#
    • 1...Sh3
      • 2.Rd3#
      • 2.Re4#
    • 1...Se4
      • 2.Rd3#
      • 2.Rxe4#
    • 1...Sxg4
      • 2.Rd3#
      • 2.Re4#
      • 2.Rf4#
    • 1...Sa2
      • 2.Rd3#
    • 1...Sc2
      • 2.Rd3#
    • 1...Sbd3
      • 2.Rxd3#
    • 1...Sxa6
      • 2.Rd3#
    • 1...Sc6
      • 2.Rd3#
  • Tries
    • 1.Rxa3?
      • threat
        • 2.Rf4#
      • 1...Bd3+
        • 2.Raxd3#
        • 2.Rfxd3#
      • 1...Bb3
        • 2.Rd3#
      • 1...Sd3
        • 2.Raxd3#
        • 2.Rfxd3#
      • 1...Rxa3!
    • 1.Rd3+?
      • 1...Bxd3+
        • 2.Rxd3#
      • 1...Sxd3!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Rf4#
      • 1...Bd3+
        • 2.Rbxd3#
        • 2.Rfxd3#
      • 1...Bxb3
        • 2.Rd3#
      • 1...Sd3
        • 2.Rbxd3#
        • 2.Rfxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • B(h);N_GUARD,P_SPINS(g)::R1(B)
    • B(h);CHECK,N_GUARD,P_SPINS(g)::R1(B),XB(h)
    • S(d);::B(A)+R(B),DCHECK,XS(d)
    • S(g);N_GUARD,P_SPINB(h)::R1(B)
    • S(g);N_GUARD,P_SPINB(h)::R1(B),XS(g)
    • S(g);N_GUARD,P_SPINB(h),XB(G)::R1(B)
  • Tries
    • Try
      • R(B);P_PINS(d),XP(e)
      • Threat
        • R(C)
      • Vars
        • B(h);N_GUARD,S_CUTS(g)::R1(C)
      • Refutation
        • R(a);XR(B)
    • Try
      • R(B);CHECK,P_PINS(d)
      • Vars
        • B(h);CHECK,OGATE,XR(B)::R1(C),XB(h)
      • Refutation
        • S(g);P_SPINB(h),XR(B)
  • Actual
    • R(B);P_PINS(d)
    • Threat
      • R(C)
    • Vars
      • B(h);N_GUARD,S_CUTS(g),XR(B)::R1(C)
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