MESON Chess Problem Database

Problem Display
PID: 174202 (2R5/4Q3/8/2pkp3/bpr1p3/3P3K/2n4P/3N2B1 w - - 0 1)

Buchner, Richard

Promadas, 1930

2R5/4Q3/8/2pkp3/bpr1p3/3P3K/2n4P/3N2B1

#2

7 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxc5#
    • 1...Bb3
      • 2.Qd7#
    • 1...Bd7+
      • 2.Qxd7#
    • 1...Sd4
      • 2.Se3#
  • Tries
    • 1.Rd8+?
      • 1...Bd7+
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Qd8+?
      • 1...Bd7+
        • 2.Qxd7#
      • 1...Ke6!
    • 1.dxe4+?
      • 1...Rxe4
        • 2.Rxc5#
      • 1...Kxe4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qxe5#
      • 1...Bd7+
        • 2.Qxd7#
      • 1...Kxd4
        • 2.Qd6#
      • 1...Rxd4
        • 2.Rxc5#
      • 1...Sxd4
        • 2.Se3#
      • 1...cxd4
        • 2.dxc4#
      • 1...exd4
        • 2.dxe4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(d);N_GUARD::R1(G),XP(f)
    • B(b);N_GUARD::QAR2(F)
    • B(b);CHECK,N_GUARD::QAR2(F),XB(b)
    • S(a);N_GUARD,SBLOCK::S(A)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • B(b);CHECK,N_GUARD,P_SPINB(b)::QAR2(F),XB(b)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • B(b);CHECK,N_GUARD,P_SPINB(b)::QAR2(F),XB(b)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • P(D);CHECK,XP(e)
      • Vars
        • R(d);SBLOCK,XP(D)::R1(G),XP(f)
      • Refutation
        • K(g);P_SPINP(h),S_FLIGHT,XP(D)
  • Actual
    • B(B);
    • Threat
      • QAR1(F),XP(h)
    • Vars
      • B(b);CHECK,N_GUARD::QAR2(F),XB(b)
      • K(g);P-FLIGHT,XB(B)::QAR2(F)
      • R(d);N_GUARD,SBLOCK,XB(B)::R1(G),XP(f)
      • S(a);N_GUARD,SBLOCK,XB(B)::S(A)
      • P(f);SBLOCK,XB(B)::P(D),XR(d)
      • P(h);SBLOCK,XB(B)::P(D),XP(e)
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