MESON Chess Problem Database

Problem Display
PID: 18982 (2b1BRr1/1pP3p1/1P2kp2/1p1p2pN/1Q1K2PP/8/8/8 w - - 0 1)

Bolus, Andrew

HM., American Chess Bulletin, 1911

2b1BRr1/1pP3p1/1P2kp2/1p1p2pN/1Q1K2PP/8/8/8

#2

9 + 9

1842 The White King 1914

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf8
      • 2.Sxg7#
    • 1...Rh8
      • 2.Sxg7#
    • 1...Bd7
      • 2.Bf7#
    • 1...gxh4
      • 2.Sf4#
    • 1...f5
      • 2.gxf5#
    • 1...g6
      • 2.Rxf6#
  • Tries
    • 1.Rxg8?
      • threat
        • 2.Sxg7#
      • 1...g6
        • 2.Sg7#
      • 1...f5!
    • 1.Qa3?
      • 1...Rxf8
        • 2.Sxg7#
      • 1...gxh4
        • 2.Sf4#
      • 1...Rh8
        • 2.Sxg7#
      • 1...Bd7
        • 2.Bf7#
      • 1...f5
        • 2.gxf5#
      • 1...g6
        • 2.Rxf6#
      • 1...b4!
    • 1.Qc5?
      • 1...Rxf8
        • 2.Sxg7#
      • 1...gxh4
        • 2.Sf4#
      • 1...Rh8
        • 2.Sxg7#
      • 1...Bd7
        • 2.Bf7#
      • 1...f5
        • 2.gxf5#
      • 1...g6
        • 2.Rxf6#
      • 1...b4!
  • Keys
    • 1.Kc5!
      • threat
        • 2.Qe1#
      • 1...Ke5
        • 2.Qe1#
      • 1...Ke7
        • 2.Kxd5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(i);N_GUARD,XR(I)::S(E),XP(g)
    • R(i);N_GUARD::S(E),XP(g)
    • B(h);SBLOCK::B(H)
    • P(c);N_GUARD,XP(D)::S(E)
    • P(e);OGATE::P(C),XP(e)
    • P(g);N_GUARD::R1(I),XP(e)
  • Tries
    • Try
      • R(I);XR(i)
      • Threat
        • S(E),XP(g)
      • Vars
        • P(g);::S(E)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Vars
        • R(i);N_GUARD,XR(I)::S(E),XP(g)
        • P(c);N_GUARD,XP(D)::S(E)
        • R(i);N_GUARD::S(E),XP(g)
        • B(h);SBLOCK::B(H)
        • P(e);OGATE::P(C),XP(e)
        • P(g);N_GUARD::R1(I),XP(e)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • R(i);N_GUARD,XR(I)::S(E),XP(g)
        • P(c);N_GUARD,XP(D)::S(E)
        • R(i);N_GUARD::S(E),XP(g)
        • B(h);SBLOCK::B(H)
        • P(e);OGATE::P(C),XP(e)
        • P(g);N_GUARD::R1(I),XP(e)
      • Refutation
        • P(a);
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR(A)
    • Vars
      • K(d);P-FLIGHT::QAR(A)
      • K(d);P-FLIGHT::QAB(A)+K(B),XP(b)
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