MESON Chess Problem Database

Problem Display
PID: 241778 (8/8/2p5/1p6/1QpkBK2/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1928

8/8/2p5/1p6/1QpkBK2/8/8/8

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qd2#
  • Tries
    • 1.Kf5?
      • 1...c5
        • 2.Qd2#
      • 1...Ke3!
    • 1.Bb1?
      • 1...c5
        • 2.Qd2#
      • 1...Kd5!
    • 1.Bh1?
      • 1...c5
        • 2.Qd2#
      • 1...Kd3!
    • 1.Bc2?
      • 1...c5
        • 2.Qd2#
      • 1...Kd5!
    • 1.Bg2?
      • 1...c5
        • 2.Qd2#
      • 1...Kd3!
    • 1.Bf3?
      • 1...c5
        • 2.Qd2#
      • 1...Kd3!
    • 1.Bf5?
      • 1...c5
        • 2.Qd2#
      • 1...Kd5!
    • 1.Bg6?
      • 1...c5
        • 2.Qd2#
      • 1...Kd5!
    • 1.Bh7?
      • 1...c5
        • 2.Qd2#
      • 1...Kd5!
    • 1.Qa5?
      • 1...c3
        • 2.Qb4#
      • 1...b4
        • 2.Qe5#
      • 1...c5
        • 2.Qd2#
      • 1...Kc5!
    • 1.Qe7?
      • threat
        • 2.Qe5#
      • 1...c3
        • 2.Qb4#
      • 1...Kc3!
    • 1.Qb2+?
      • 1...c3
        • 2.Qb4#
      • 1...Kc5!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qe3#
      • 1...c3
        • 2.Qb4#

FEATURES

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