MESON Chess Problem Database

Problem Display
PID: 198279 (3n4/1P2p3/1P1p4/Rr2kNPn/r3b2K/2P3PQ/BB1N1p1p/4R1bq w - - 0 1)

Westbury, Eric Ernest

Rivista del Club Argentino de Ajedrez, 1920

3n4/1P2p3/1P1p4/Rr2kNPn/r3b2K/2P3PQ/BB1N1p1p/4R1bq

#2

13 + 12

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Sxf3#
    • 1...Rb4
      • 2.cxb4#
    • 1...Rd4
      • 2.cxd4#
    • 1...e6
      • 2.c4#
  • Keys
    • 1.Se3!
      • threat
        • 2.c4#
      • 1...Bd5+
        • 2.Sec4#
      • 1...Bf5+
        • 2.Sg4#
      • 1...Rxa2
        • 2.Sdc4#
      • 1...Raxa5
        • 2.Sdc4#
      • 1...Sxg3
        • 2.Qxg3#
      • 1...d5
        • 2.b8Q#
        • 2.b8B#
      • 1...Ra3
        • 2.Sdc4#
      • 1...Rb4
        • 2.cxb4#
      • 1...Rc4
        • 2.Sdxc4#
      • 1...Rd4
        • 2.cxd4#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::S(D),XQ(b)
    • R(e);OGATE::B(C)+P(E),XR(e)
    • R(e);OGATE::P(E),XR(e)
    • P(k);SBLOCK::B(C)+P(E)
  • Actual
    • S(J);N_PINB(f)
    • Threat
      • B(C)+P(E)
    • Vars
      • B(f);CHECK,N_SPINR(g),SBLOCK::R(A)+S(J),DCHECK
      • B(f);CHECK,SBLOCK::R(A)+S(J),DCHECK
      • R(e);N_GUARD,XB(B)::S(D)
      • R(e);N_GUARD,N_SPINR(g),XR(I)::S(D)
      • S(i);OGATE,XP(F)::QAB(G),XS(i)
      • P(j);N_SPINR(g)::P=Q
      • R(e);N_GUARD::S(D)
      • R(e);OGATE::B(C)+P(E),XR(e)
      • R(e);N_GUARD::S(D),XR(e)
      • R(e);OGATE::P(E),XR(e)
      • S(l);N_GUARD::QAR1(G)
      • S(l);N_GUARD::QAR1(G),XS(l)
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