MESON Chess Problem Database

Problem Display
PID: 251702 (6K1/p1QN2p1/8/1n1kpP2/R1pP4/1n1p1RN1/3P4/q1r4B w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2021

6K1/p1QN2p1/8/1n1kpP2/R1pP4/1n1p1RN1/3P4/q1r4B

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qxe5#
    • 1...Sxd2
      • 2.Qc5#
    • 1...S3xd4
      • 2.Qc5#
    • 1...Sa5
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...exd4
      • 2.Rf1#
  • Tries
    • 1.Rf1+?
      • 1...Kxd4
        • 2.Qxe5#
      • 1...e4!
    • 1.Rxd3+?
      • 1...e4
        • 2.Bxe4#
      • 1...Rxh1!
    • 1.Qc6+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qb7+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kd6!
  • Keys
    • 1.dxe5!
      • threat
        • 2.Rxd3#
      • 1...Kd4
        • 2.Rf4#
      • 1...Rxh1
        • 2.Qxc4#
      • 1...Qd4
        • 2.Qb7#
      • 1...S3d4
        • 2.Qc5#
      • 1...S5d4
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • K(g);N_GUARD,P-FLIGHT,P_SPINP(e),XP(F)::QAB1(H),XP(h)
    • S(c);N_GUARD,XP(B)::QAR1(H)
    • S(c);N_GUARD,XP(F)::QAR1(H)
    • S(c);N_GUARD::QAR1(H)
    • S(c);N_GUARD::QAR1(H),XS(c)
    • P(h);N_GUARD,SBLOCK,XP(F)::B(A)+R(C)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(e),XP(F)::QAB1(H),XP(h)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • R(C);CHECK,XP(d)
      • Vars
        • P(h);P_SPINP(h)::B(A),XP(h)
      • Refutation
        • R(b);XB(A)
    • Try
      • Q(H);CHECK
      • Vars
        • K(g);OGATE,P-FLIGHT,P_SPINP(e),XP(F)::QAR1(H)
      • Refutation
        • K(g);S_FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(g);OGATE,P-FLIGHT,P_SPINP(e),XP(F)::QAR1(H)
      • Refutation
        • K(g);P-FLIGHT
  • Actual
    • P(F);XP(h)
    • Threat
      • B(A)+R(C),DCHECK,XP(d)
    • Vars
      • K(g);P-FLIGHT,P_SPINP(e),S_CUTR(b)::R(C)
      • R(b);N_GUARD,XB(A)::QAB1(H),XP(e)
      • Q(a);SBLOCK::QAB(H)
      • S(c);N_GUARD::QAR1(H)
      • S(f);N_GUARD,SBLOCK::QAR1(H)
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