MESON Chess Problem Database

Problem Display
PID: 261126 (3Nr3/4R1P1/3P2K1/1BBkp3/1p2N2p/p3p3/q1nP2P1/nbRQb3 w - - 0 1)

Handloser, Ralf Chris

Neue Zurcher Zeitung, 2016

3Nr3/4R1P1/3P2K1/1BBkp3/1p2N2p/p3p3/q1nP2P1/nbRQb3

#2

12 + 12

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qf3#
    • 1...Qc4
      • 2.Bc6#
  • Tries
    • 1.dxe3+?
      • 1...Kxe4
        • 2.Qf3#
        • 2.Qd3#
      • 1...Sd4
        • 2.Bc6#
      • 1...Bd2!
    • 1.d3?
      • threat
        • 2.Bc6#
      • 1...Sd4
        • 2.Sf6#
      • 1...Rxd8!
    • 1.g8Q+?
      • 1...Kxe4
        • 2.Qf3#
        • 2.Qg4#
      • 1...Rxg8+!
    • 1.g8B+?
      • 1...Kxe4
        • 2.Qf3#
        • 2.Qg4#
      • 1...Rxg8+!
  • Keys
    • 1.d4!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Sxd4
        • 2.Bc6#
      • 1...exd4
        • 2.Qh5#
      • 1...Rf8
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(j);OGATEB,P_SPINP(k),S_FLIGHT,XS(E)::QAB1(B)
    • Q(d);SBLOCK::B(F)
  • Tries
    • Try
      • P(C);CHECK,XP(g)
      • Vars
        • S(e);P_PINS(E),P_SPINS(e)::B(F)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • P(C);
      • Threat
        • B(F)
      • Vars
        • S(e);::S(E)
      • Refutation
        • R(l);XS(L)
    • Try
      • P(K);CHECK
      • Refutation
        • R(l);CHECK,XQ(K)
    • Try
      • P(K);CHECK
      • Refutation
        • R(l);CHECK,XB(K)
  • Actual
    • P(C);
    • Threat
      • S(E)
    • Vars
      • K(j);OGATEB,P_SPINP(k),S_FLIGHT,XS(E)::QAB1(B)
      • S(e);P_PINS(E),P_SPINS(e),XP(C)::B(F)
      • P(k);OGATEB,P_SPINP(k),XP(C)::QAR(B)
      • R(l);N_GUARD::R1(J),XP(k)
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