MESON Chess Problem Database

Problem Display
PID: 187740 (R3B2n/1p6/bb1n2Q1/3k4/1PR2PN1/2P5/3K4/8 w - - 0 1)

Sandoval, Andres

The Houston Post, 1909

R3B2n/1p6/bb1n2Q1/3k4/1PR2PN1/2P5/3K4/8

#2

9 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qe6#
    • 1...Be3+
      • 2.Sxe3#
    • 1...Bd4
      • 2.Rxd4#
    • 1...Ba5
      • 2.Se3#
      • 2.Rd4#
      • 2.Rc5#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bc7
      • 2.Se3#
      • 2.Rd4#
      • 2.Rc5#
    • 1...Bd8
      • 2.Se3#
      • 2.Rd4#
      • 2.Rc5#
  • Tries
    • 1.Bc6+?
      • 1...Kxc4
        • 2.Qe6#
      • 1...bxc6!
    • 1.Qf5+?
      • 1...Kxc4
        • 2.Qe6#
      • 1...Sxf5!
    • 1.Qxd6+?
      • 1...Kxc4
        • 2.Qe6#
      • 1...Kxd6!
  • Keys
    • 1.Rd8!
      • threat
        • 2.Qe4#
      • 1...Be3+
        • 2.Sxe3#
      • 1...Kxc4
        • 2.Qe6#
      • 1...Bxc4
        • 2.Rxd6#
        • 2.Qf5#
      • 1...Bxd8
        • 2.Se3#
        • 2.Rd4#
        • 2.Rc5#
      • 1...Sxg6
        • 2.Bf7#
      • 1...Bd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT,XR(D)::QAB(G)
    • B(c);CHECK,N_GUARD::S(F),XB(c)
    • B(c);N_GUARD::R1(D),XB(c)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB(G)
      • Refutation
        • P(e);XB(I)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB(G)
      • Refutation
        • S(d);XQ(G)
    • Try
      • Q(G);CHECK,XS(d)
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB(G)
      • Refutation
        • K(a);P-FLIGHT,XQ(G)
  • Actual
    • R(H);P_PINS(d)
    • Threat
      • QAB1(G)
    • Vars
      • B(c);CHECK,N_GUARD::S(F),XB(c)
      • K(a);N_SPINS(d),S_FLIGHT,XR(D)::QAB(G)
      • S(f);N_GUARD,XQ(G)::B(I)
      • B(c);N_GUARD::R1(D),XB(c)
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