MESON Chess Problem Database

Problem Display
PID: 227556 (8/2pp1p2/R1b2p2/1p1k1N2/1P1P3p/2p3pP/2P1Q1K1/3R4 w - - 0 1)

Pikler, Robert

Magyar Sakkvilag, 1926

8/2pp1p2/R1b2p2/1p1k1N2/1P1P3p/2p3pP/2P1Q1K1/3R4

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Se7#
    • 1...Ba8
      • 2.Se7#
    • 1...d6
      • 2.Se7#
  • Tries
    • 1.Kf1?
      • 1...Bb7
        • 2.Se7#
      • 1...Ba8
        • 2.Se7#
      • 1...d6
        • 2.Se7#
      • 1...g2+!
    • 1.Kg1?
      • 1...Bb7
        • 2.Se7#
      • 1...Ba8
        • 2.Se7#
      • 1...d6
        • 2.Se7#
      • 1...g2!
    • 1.Kh1?
      • 1...Bb7
        • 2.Se7#
      • 1...Ba8
        • 2.Se7#
      • 1...d6
        • 2.Se7#
      • 1...g2+!
    • 1.Kf3?
      • 1...Bb7
        • 2.Se3#
        • 2.Se7#
      • 1...Ba8
        • 2.Se3#
        • 2.Se7#
      • 1...d6
        • 2.Se7#
      • 1...g2!
    • 1.Rd2?
      • 1...Bb7
        • 2.Se7#
      • 1...Ba8
        • 2.Se7#
      • 1...d6
        • 2.Se7#
      • 1...cxd2!
    • 1.Rb6?
      • 1...Bb7
        • 2.Se7#
      • 1...Ba8
        • 2.Se7#
      • 1...d6
        • 2.Se7#
      • 1...cxb6!
    • 1.Qd3?
      • 1...Ke6+
        • 2.Qe4#
      • 1...Bb7
        • 2.Se3#
        • 2.Se7#
      • 1...Ba8
        • 2.Se3#
        • 2.Se7#
      • 1...d6!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Re1#
        • 2.Qe4#
      • 1...Kc4!
    • 1.Qe4+?
      • 1...Kc4
        • 2.d5#
      • 1...Kxe4!
    • 1.Qe8?
      • 1...Bb7
        • 2.Se3#
      • 1...Ba8
        • 2.Se3#
      • 1...d6
        • 2.Se3#
      • 1...Kc4+!
  • Keys
    • 1.Qg4!
      • 1...Kc4+
        • 2.d5#
      • 1...Ke6+
        • 2.Qe4#
      • 1...Bb7
        • 2.Se3#
      • 1...Ba8
        • 2.Se3#
      • 1...d6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);::S(H)
    • P(i);SBLOCK::S(H)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • B(f);::S(H)
        • P(i);SBLOCK::S(H)
      • Refutation
        • P(b);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • B(f);::S(H)
        • P(i);SBLOCK::S(H)
      • Refutation
        • P(b);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • B(f);::S(H)
        • P(i);SBLOCK::S(H)
      • Refutation
        • P(b);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(i);SBLOCK::S(H)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • B(f);::S(H)
        • P(i);SBLOCK::S(H)
      • Refutation
        • P(a);XR(A)
    • Try
      • R(I);
      • Vars
        • B(f);::S(H)
        • P(i);SBLOCK::S(H)
      • Refutation
        • P(h);XR(I)
    • Try
      • Q(C);
      • Vars
        • K(e);CHECK,P_SPINB(f),S_FLIGHT::QAR2(C)
      • Refutation
        • P(i);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(e);P_PINQ(C),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);OGATE,P_PINQ(C),S_FLIGHT::QAR(C)+P(G)
      • Refutation
        • K(e);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • B(f);::S(H)
        • P(i);SBLOCK::S(H)
      • Refutation
        • K(e);CHECK,S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(e);CHECK,OGATE,S_FLIGHT::QAR(C)+P(G)
      • K(e);CHECK,P_SPINB(f),S_FLIGHT::QAR2(C)
      • B(f);::S(H)
      • P(i);SBLOCK::S(H)
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