MESON Chess Problem Database

Problem Display
PID: 206704 (8/8/3K4/3B4/1p1B2p1/1p1k2P1/1P1p4/3Q4 w - - 0 1)

Szasz, Lajos

Ujsag, 1925

8/8/3K4/3B4/1p1B2p1/1p1k2P1/1P1p4/3Q4

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qxd2#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qxd2#
      • 1...Ke3
        • 2.Qxd2#
      • 1...bxc3!
    • 1.Qxg4?
      • threat
        • 2.Qe4#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Kc2!
    • 1.Qb1+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Ke2!
    • 1.Qf1+?
      • 1...Kc2
        • 2.Be4#
      • 1...Kxd4!
    • 1.Qg1?
      • 1...Kc2
        • 2.Be4#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Ke2!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qe4#
      • 1...Kc2
        • 2.Be4#
      • 1...Ke2
        • 2.Bc4#
      • 1...Kxd4
        • 2.Qe4#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,XB(D)::QAR2(A),XP(a)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(c);N_SPINP(a),P-FLIGHT::QAB1(A),XP(a)
      • Refutation
        • P(d);XB(D)
    • Try
      • Q(A);N_PINP(a),XP(e)
      • Threat
        • QAB1(A)
      • Vars
        • P(a);OGATEB::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(c);OGATE,P-FLIGHT,XB(D)::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(c);S_FLIGHT::B(E)
      • Refutation
        • K(c);P-FLIGHT,XB(D)
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(c);S_FLIGHT::B(E)
        • P(a);OGATEB::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT::B(E)
      • K(c);P-FLIGHT,XB(D)::QAR1(A)
      • P(a);OGATEB::QAR2(A),XQ(a)
      • P(a);OGATEB::QAR2(A),XS(a)
      • P(a);OGATEB::QAR2(A),XB(a)
      • P(a);OGATEB::QAR2(A),XR(a)
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