MESON Chess Problem Database

Problem Display
PID: 205708 (8/8/5N2/8/8/1K1kpQ2/3p4/8 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1925

8/8/5N2/8/8/1K1kpQ2/3p4/8

#2

3 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
    • 1...d1Q+
      • 2.Qxd1#
    • 1...d1S
      • 2.Qxd1#
    • 1...d1B+
      • 2.Qxd1#
    • 1...d1R
      • 2.Qxd1#
  • Tries
    • 1.Kb4?
      • 1...Kd4
        • 2.Qe4#
        • 2.Qd5#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Kc2!
    • 1.Qh1?
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...Kd4
        • 2.Qd5#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...e2
        • 2.Qe4#
      • 1...Ke2!
    • 1.Qh5?
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...Kd4
        • 2.Qd5#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...e2!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke2!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qc4#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...e2
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINP(c),P-FLIGHT::QAR1(B)
    • P(a);CHECK,OGATEB::QAR2(B),XQ(a)
    • P(a);OGATEB::QAR2(B),XS(a)
    • P(a);CHECK,OGATEB::QAR2(B),XB(a)
    • P(a);OGATEB::QAR2(B),XR(a)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(B),XQ(a)
        • P(a);OGATEB::QAR2(B),XS(a)
        • P(a);OGATEB::QAR2(B),XB(a)
        • P(a);OGATEB::QAR2(B),XR(a)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • Q(B);N_PINP(c)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(B),XQ(a)
        • P(a);CHECK,OGATEB::QAR2(B),XB(a)
        • K(b);P-FLIGHT::QAR1(B)
        • P(a);OGATEB::QAR2(B),XS(a)
        • P(a);OGATEB::QAR2(B),XR(a)
        • P(c);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);N_PINP(c)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(B),XQ(a)
        • P(a);CHECK,OGATEB::QAR2(B),XB(a)
        • K(b);P-FLIGHT::QAR1(B)
        • P(a);OGATEB::QAR2(B),XS(a)
        • P(a);OGATEB::QAR2(B),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK,N_PINP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);N_PINP(c)
    • Threat
      • QAB1(B)
    • Vars
      • P(a);CHECK,OGATEB::QAR2(B),XQ(a)
      • P(a);CHECK,OGATEB::QAR2(B),XB(a)
      • P(a);OGATEB::QAR2(B),XS(a)
      • P(a);OGATEB::QAR2(B),XR(a)
      • P(c);::QAB1(B)
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