MESON Chess Problem Database

Problem Display
PID: 261052 (7B/2r1ppb1/2Rp4/2r3QK/4P3/2kP3R/PpN5/1B3N2 w - - 0 1)

Handloser, Ralf Chris

Neue Zurcher Zeitung, 2005

7B/2r1ppb1/2Rp4/2r3QK/4P3/2kP3R/PpN5/1B3N2

#2

11 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qd2#
      • 2.Qa5#
      • 2.dxc4#
      • 2.d4#
    • 1...R5xc6
      • 2.Qd2#
      • 2.Qa5#
    • 1...Bd4
      • 2.Bxd4#
    • 1...Be5
      • 2.Qd2#
    • 1...d5
      • 2.Qd2#
    • 1...e5
      • 2.Qd2#
    • 1...f5
      • 2.Qd2#
  • Tries
    • 1.Sd2?
      • threat
        • 2.d4#
      • 1...Bd4
        • 2.Bxd4#
      • 1...Be5!
    • 1.Bxg7+?
      • 1...e5
        • 2.Qd2#
      • 1...f6!
    • 1.Rxc5+?
      • 1...dxc5
        • 2.Qd2#
      • 1...Rxc5!
  • Keys
    • 1.Qd5!
      • threat
        • 2.d4#
      • 1...Bd4
        • 2.Bxd4#
      • 1...Be5
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(h);OGATE::B(K),XB(h)
    • B(h);N_PINQ(H)::QAB1(H)
    • P(d);N_PINQ(H)::QAB1(H)
    • P(f);N_PINQ(H),N_SPINB(h)::QAB1(H)
    • P(g);N_PINQ(H)::QAB1(H)
  • Tries
    • Try
      • S(B);
      • Threat
        • R(F)+P(E)
      • Vars
        • B(h);OGATE::B(K),XB(h)
      • Refutation
        • B(h);N_PINQ(H)
    • Try
      • B(K);CHECK,XB(h)
      • Vars
        • P(f);N_PINQ(H),P_SPINP(f)::QAB1(H)
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • R(J);CHECK,N_SPINQ(H),XR(c)
      • Vars
        • P(d);XR(J)::QAB1(H)
      • Refutation
        • R(e);P_PINQ(H),XR(J)
  • Actual
    • Q(H);
    • Threat
      • R(F)+P(E)
    • Vars
      • B(h);OGATE::B(K),XB(h)
      • B(h);N_PINQ(H)::QAR1(H)
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