MESON Chess Problem Database

Problem Display
PID: 219117 (8/1n4K1/2P5/1p1k1b2/1PN1R3/4P2B/2Q5/8 w - - 0 1)

Stepanov, AS

Deutsche Schachzeitung, 1900

8/1n4K1/2P5/1p1k1b2/1PN1R3/4P2B/2Q5/8

#2

8 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Sb6#
  • Tries
    • 1.Rd4+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qd1+?
      • 1...Kxe4
        • 2.Bg2#
      • 1...Kxc6!
    • 1.Qd2+?
      • 1...Kxe4
        • 2.Bg2#
      • 1...Kxc6!
  • Keys
    • 1.Re6!
      • 1...Kxe6
        • 2.Qe4#
      • 1...Bxc2
        • 2.Sb6#
      • 1...Bxh3
        • 2.Qe4#
      • 1...Bxe6
        • 2.Bg2#
      • 1...bxc4
        • 2.Qxf5#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Bd3
        • 2.Sb6#
        • 2.Qxd3#
      • 1...Be4
        • 2.Sb6#
        • 2.Qxe4#
      • 1...Bg4
        • 2.Qe4#
      • 1...Bg6
        • 2.Sb6#
      • 1...Bh7
        • 2.Sb6#
      • 1...Sa5
        • 2.Rd6#
      • 1...Sc5
        • 2.Rd6#
      • 1...Sd8
        • 2.Rd6#

This is a version of 175584

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::S(E)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(b);P_SPINB(c),S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(F)::B(C)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(F)::B(C)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
  • Actual
    • R(F);
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT,XR(F)::QAR2(A)
      • B(c);XQ(A)::S(E)
      • B(c);N_GUARD,XB(C)::QAB1(A)
      • B(c);N_GUARD,SBLOCK,XR(F)::B(C)
      • P(a);SBLOCK,XS(E)::QAR2(A),XB(c)
      • S(d);N_GUARD::R1(F),XS(d)
      • B(c);N_GUARD::QAB1(A)
      • B(c);::S(E)
      • S(d);N_GUARD::R1(F)
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