MESON Chess Problem Database

Problem Display
PID: 158509 (1K1bB3/B3n3/N1Ppp1N1/1P1k2r1/1P2b1p1/1q1P3p/6R1/3R3Q w - - 0 1)

Andrew, Frederick William

Sp. Comm., The Schoolmaster, 1895

(First published on Sat Mar 30 1895)

1K1bB3/B3n3/N1Ppp1N1/1P1k2r1/1P2b1p1/1q1P3p/6R1/3R3Q

#2

12 + 10

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb4
      • 2.Sxb4#
    • 1...Re5
      • 2.Sf4#
    • 1...Bxd3
      • 2.Rc2#
      • 2.Rxg4#
    • 1...Bc7+
      • 2.Sxc7#
    • 1...Sxc6+
      • 2.Bxc6#
    • 1...e5
      • 2.Bf7#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Qxe4#
      • 1...Bc7+
        • 2.Sxc7#
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...Bxh1
        • 2.Rd4#
      • 1...e5
        • 2.Bf7#
      • 1...Qc4
        • 2.dxe4#
      • 1...Re5
        • 2.Sf4#
      • 1...Bg2
        • 2.Rd4#
      • 1...Bf3
        • 2.Rd4#
        • 2.Qxf3#
      • 1...Rxg4!
  • Keys
    • 1.Re2!
      • threat
        • 2.Qxe4#
      • 1...Bc7+
        • 2.Sxc7#
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...Bxh1
        • 2.Sf4#
      • 1...e5
        • 2.Bf7#
      • 1...Qc4
        • 2.dxe4#
      • 1...Re5
        • 2.Sf4#
      • 1...Bg2
        • 2.Sf4#
      • 1...Bf3
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(a);P_PINP(F),XP(E)::S(G),XQ(a)
    • R(f);SBLOCK::S(I)
    • B(j);CHECK,N_GUARD::S(G),XB(j)
    • S(i);CHECK,OGATE,XP(H)::B(L),XS(i)
    • P(h);OGATEB::B(L)
  • Tries
    • Try
      • R(C);P_PINB(c),XP(d)
      • Threat
        • QAB1(B),XB(c)
      • Vars
        • B(j);CHECK,N_GUARD::S(G),XB(j)
        • S(i);CHECK,OGATE,XP(H)::B(L),XS(i)
        • Q(a);P_PINP(F),XP(E)::S(G),XQ(a)
        • B(c);N_SPINB(c),OGATE,XQ(B)::R1(C)
        • P(h);OGATEB::B(L)
        • Q(a);SBLOCK::R(A)+P(D)DCHECK,XB(c)
        • R(f);SBLOCK::S(I)
        • B(c);OGATE::R1(C)
      • Refutation
        • R(f);XR(C)
  • Actual
    • R(C);P_PINB(c)
    • Threat
      • QAB1(B),XB(c)
    • Vars
      • B(j);CHECK,N_GUARD::S(G),XB(j)
      • S(i);CHECK,OGATE,XP(H)::B(L),XS(i)
      • Q(a);P_PINP(F),XP(E)::S(G),XQ(a)
      • B(c);N_SPINB(c),XQ(B)::S(I)
      • P(h);OGATEB::B(L)
      • Q(a);SBLOCK::R(A)+P(D)DCHECK,XB(c)
      • R(f);SBLOCK::S(I)
      • B(c);::S(I)
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