MESON Chess Problem Database

Problem Display
PID: 90263 (6Q1/8/8/4pp2/2p2k2/2K3R1/8/8 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Die Schwalbe, 1962

6Q1/8/8/4pp2/2p2k2/2K3R1/8/8

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxc4#
    • 1...e4
      • 2.Qb8#
  • Tries
    • 1.Kb2?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qb8#
      • 1...c3+!
    • 1.Kc2?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qb8#
      • 1...c3!
    • 1.Kd2?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qb8#
      • 1...c3+!
    • 1.Kb4?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qb8#
      • 1...c3!
    • 1.Kxc4?
      • 1...e4
        • 2.Qb8#
      • 1...Ke4!
    • 1.Rd3?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qg3#
      • 1...cxd3!
    • 1.Rf3+?
      • 1...Ke4
        • 2.Qa8#
      • 1...Kxf3!
    • 1.Qxc4+?
      • 1...e4
        • 2.Qc7#
      • 1...Kxg3!
    • 1.Qd5?
      • threat
        • 2.Qf3#
      • 1...e4
        • 2.Qd6#
      • 1...Kxg3!
    • 1.Qe6?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qd6#
      • 1...Kxg3!
    • 1.Qf7?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qc7#
      • 1...Kxg3!
    • 1.Qg6?
      • 1...e4
        • 2.Qd6#
      • 1...Ke4!
    • 1.Qg7?
      • 1...e4
        • 2.Qc7#
      • 1...Ke4!
    • 1.Qa8?
      • threat
        • 2.Qf3#
      • 1...e4
        • 2.Qb8#
      • 1...Kxg3!
    • 1.Qc8?
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qc7#
        • 2.Qb8#
      • 1...Kxg3!
  • Keys
    • 1.Rh3!
      • 1...Ke4
        • 2.Qxc4#
      • 1...e4
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(C),XP(a)
    • P(c);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XP(a)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XP(a)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XP(a)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XP(a)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XP(a)
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • P(a);XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(C)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • Q(C);CHECK,XP(a)
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(C)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C),XP(a)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(C);P_PINP(d)
      • Vars
        • K(b);N_SPINP(d),P-FLIGHT::QAR2(C),XP(a)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);N_SPINP(d),S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(d)
    • Try
      • Q(C);
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • R(B);
    • Vars
      • K(b);P-FLIGHT::QAR2(C),XP(a)
      • P(c);SBLOCK::QAB1(C)
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